[SessionManager] 📝 Generated prompt: Generate 10 diverse English learning questions based on the provided vocabulary and grammar items.

Vocabulary IDs: vocab_1762334792269 Grammar IDs:

Requirements:

• Difficulty range: 3-7/10 (mixed)
• Question types: Mix of all 10 types (lexical_fix, grammar_transformation, translate, gap_fill, choice_one, choice_multi, sentence_puzzle, matching, true_false, reverse_translation)
• Use the provided vocabulary and grammar items as the basis for questions
• Each question MUST be unique and high quality
• STRICTLY follow the structure for each question type

QUESTION TYPE STRUCTURES:

1. LEXICAL_FIX: { "question_type": "lexical_fix", "incorrect_sentence": "I am very interesting in learning English.", "incorrect_word": "interesting", "word_position": 3, "correct_word": "interested", "correct_sentence": "I am very interested in learning English.", "context": "Tìm từ sai trong câu và sửa lại cho đúng", "hint": "Think about adjectives ending in -ed vs -ing", "explanation": "Use 'interested' for feelings, 'interesting' for things.", "error_type": "wrong_form", "difficulty_level": 3 }

2. GRAMMAR_TRANSFORMATION: { "question_type": "grammar_transformation", "original_sentence": "They built this house in 1990.", "context": "Change to passive voice", "grammar_focus": "passive", "correct_answer": "This house was built in 1990.", "alternative_answers": ["This house was built by them in 1990."], "hint": "Move the object to the subject position", "explanation": "In passive voice, the object becomes the subject.", "difficulty_level": 5 }

3. SENTENCE_PUZZLE: { "question_type": "sentence_puzzle", "scrambled_items": ["always", "early", "wakes", "she", "up"], "correct_sentence": "She always wakes up early.", "correct_order": [3, 0, 2, 4, 1], "context": "Sắp xếp các từ sau để tạo thành câu hoàn chỉnh", "hint": "Adverbs of frequency go before the main verb", "language_code": "en", "difficulty_level": 4 }

4. TRANSLATE: { "question_type": "translate", "source_sentence": "Tôi đang học tiếng Anh.", "source_language": "vi", "correct_translation": "I am learning English.", "alternative_translations": ["I am studying English.", "I'm learning English."], "context": "Dịch câu tiếng Việt sang tiếng Anh", "hint": "Use present continuous for ongoing actions", "difficulty_level": 3 }

5. REVERSE_TRANSLATION: { "question_type": "reverse_translation", "english_sentence": "I have been living here for five years.", "target_language": "vi", "correct_translation": "Tôi đã sống ở đây được năm năm.", "alternative_translations": ["Tôi đã ở đây được 5 năm.", "Tôi sống ở đây được năm năm rồi."], "context": "Dịch câu tiếng Anh sang tiếng Việt", "hint": "Focus on the duration aspect", "key_grammar_points": ["present_perfect_continuous"], "difficulty_level": 6 }

6. GAP_FILL: { "question_type": "gap_fill", "sentence_with_gaps": "She _____ to the market every Sunday and _____ fresh vegetables.", "gaps": [ { "position": 0, "correct_answer": "goes", "alternative_answers": [] }, { "position": 1, "correct_answer": "buys", "alternative_answers": ["purchases"] } ], "context": "Điền động từ thích hợp vào chỗ trống", "hint": "Use simple present tense", "word_bank": ["go", "goes", "buy", "buys", "went", "bought"], "difficulty_level": 3 }

7. CHOICE_ONE: { "question_type": "choice_one", "question_text": "Which word means 'very tired'?", "options": [ { "id": "opt_001", "text": "exhausted" }, { "id": "opt_002", "text": "excited" }, { "id": "opt_003", "text": "energetic" }, { "id": "opt_004", "text": "relaxed" } ], "correct_option_id": "opt_001", "context": "Chọn từ đồng nghĩa với 'very tired'", "hint": "Think about extreme tiredness", "explanation": "'Exhausted' means extremely tired or worn out.", "difficulty_level": 4 }

8. CHOICE_MULTI: { "question_type": "choice_multi", "question_text": "Which of the following are modal verbs?", "options": [ { "id": "opt_m01", "text": "can" }, { "id": "opt_m02", "text": "should" }, { "id": "opt_m03", "text": "want" }, { "id": "opt_m04", "text": "must" }, { "id": "opt_m05", "text": "like" } ], "correct_option_ids": ["opt_m01", "opt_m02", "opt_m04"], "min_selections": 2, "max_selections": 4, "context": "Chọn tất cả các modal verbs từ danh sách", "hint": "Modal verbs express possibility, necessity, or permission", "explanation": "Modal verbs include can, could, may, might, must, shall, should, will, would.", "difficulty_level": 5 }

9. MATCHING: { "question_type": "matching", "instruction": "Match each word with its definition", "left_items": [ { "id": "left_01", "text": "enormous" }, { "id": "left_02", "text": "tiny" }, { "id": "left_03", "text": "ancient" }, { "id": "left_04", "text": "modern" } ], "right_items": [ { "id": "right_01", "text": "very small" }, { "id": "right_02", "text": "very large" }, { "id": "right_03", "text": "very old" }, { "id": "right_04", "text": "recent or new" } ], "correct_matches": [ { "left_id": "left_01", "right_id": "right_02" }, { "left_id": "left_02", "right_id": "right_01" }, { "left_id": "left_03", "right_id": "right_03" }, { "left_id": "left_04", "right_id": "right_04" } ], "context": "Nối mỗi từ với định nghĩa của nó", "hint": "Think about size and time-related adjectives", "match_type": "word_definition", "difficulty_level": 4 }

10. TRUE_FALSE: { "question_type": "true_false", "statement": "The present perfect tense is formed with 'have/has + past participle'.", "correct_answer": true, "context": "Đánh giá câu phát biểu về ngữ pháp present perfect", "hint": "Think about the structure of present perfect", "explanation": "The present perfect is indeed formed using have/has followed by the past participle.", "grammar_focus": "present_perfect", "difficulty_level": 3 }

Output Format: Return ONLY a valid JSON object with this structure:

{
  "questions": [
    ... array of 10 questions following the structures above ...
  ]
}

Generate NOW with diverse question types. Return ONLY valid JSON, no explanation.