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zduckmanz
2 năm trước
Chiếu một tia sáng SI đến gương phẳng được đặt nằm ngang mặt phẳng mặt phản xạ đứng lên tia phản xạ IR chứa lên bờ tường và hợp với bờ tường 1 góc 50 độ Tính góc tạo bởi tia tới và gương phẳng
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1. He went to his house, lied down on the bed, and (sleep) ……………… right away. 2. I (buy) ……………… the ticket yesterday. I am (go) ……………… Dalat tomorrow. 3. Tim (attend) ……………… the meeting at school at the moment. 4. He (have not) ……………… English for 2 years. 5. Our class (start) ……………… at 9am. 6. I always (brush) ……………… my teeth before I go to bed. 7. I (study) ……………… English since I was 21. 8. He was listening to music when his boss (come) ……………… yesterday.9. I (have do) ……………… all the homework all afternoon. 10. I (be) ……………… a student. 11. She (wait) ……………… you for all day. 12. He wasn’t working when his boss (call) ……………… him yesterday. 13. She (be) ……………… at her boyfriend’s house yesterday morning. 14. I (talk) ……………… to my father at the moment. 15. We (be) ……………… in Nhatrang on their summer holiday last year. 16. The sun (rise) ……………… in the east. 17. He (meet) ……………… his old friend near his house yesterday.18. The World Cup (take place) ……………… every four years. 19. They (play) ……………… in the garden at 4 pm yesterday. 20. She was watching a picture while her mother (cook) ……………… soup. 21. They (play) ……………… now. 22. Anne was riding her bike to school when Peter (see) ……………… her yesterday GIẢI THÍCH GIÙM MÌNH VS Ạ

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