Bài 7: Điền động từ khuyết thiêu "must" hoặc "mustn't" vào chỗ trống. 1. You……………tidy up room. 2. It’s late. You ……………make so much nosiy. 3. You……………smoke. 4.We……………be home by 9 o’clock.The film starts at 9:15. 5. You …………… do your homework. 6. I …………… finish this essay today. It has to be handed in by tomorrow. 7. Passengers…………… talk to the driver whist the bus is in motion. 8.You …………… play with fire. 9.This is a dangerous tour. Children……………e accompanied by an adult. 10.You…………… behome on time. 11. People …………… stand on this bus. 12. You…………… cheat in a test. 13.We …………… do more exercise to stay fit. 14. You…………… turn the music too load. 15. There …………… be something wrong with the engine of this car. 16.You…………… help in the house. 17. We …………… give up when we are so close. 18. You…………… annoy your little sister. 19. This was a nice evening. We……………meet again. 20. You……………bite nails. Bài 8: Điền động từ khuyết thiếu “must” hoặc “have to” vào chỗ trống thích hợp. 1. The sign says "Stop". You …………… stop here. 2. The teacher said:"You…………… do all exercises on page 21 in Look Ahead." 3. I …………… help little brother more. My father said so. 4.I……………take these medicines. The doctor said so. 5. I …………… write lines as a punishment because I threw the shoe of my neighbour through the window. 6. Sorry, I can't come. I…………… clean my room. I can't live in such a mess anymore. 7. He…………… clean the classroom because he had been throwing papers on the ground. 8. "You…………… help me", said the mysterious woman to the detective. 9. "The rules…………… be obeyed at all times!" shouted the headmaster. 10. "I …………… go. Otherwise I'll miss my train." 11. I…………… be home at one o'clock. Otherwise, my mother will kill me. giúp mình 2 bài này với mi đg cần gấp