Làm giúp em phần c bài này vs ạ

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Ex 3: Complete the sentences with Must or Mustn’t 1. She is ill, so she ……………see the doctor. 2. It is raining. You………………… take your umbrella. 3. You………………..throw litter on the stairs. 4. This is a secret. You ……………. tell any body. 5. You ………………. Make noise in the library. 6. We …………… hungry or we will miss the bus 7. You ……………….. eat fruit and vegetables. 8. The baby is sleeping. You ………………… shout. 9. You ……………be friendly to every body. 10. You …………………….. walk on the grass. Ex 4: True or False. T F 1. You must wash your hands before meals. 2. You mustn’t listen to your parents. 3. You must break the window at school. 4. You must take a shower everyday. 5. You mustn’t eat fruit and vegetables every day. 6. You must eat a lot of sweets if you want to lose some weight. 7. You must tidy you room every day. 8. You must talk in class when the teacher is teaching. Ex 5: Make rules in our class with Must/ mustn’t: 1. In our class, we …………………….. study hard. 2. In our class, we …………………….. obey our teachers. 3. In our class, we …………………….. chat with other. 4. In our class, we …………………….. we use mobiphone. 5. In our class, we ……………………..help other classmates 6. In our class, we ……………………..say bad words. Ex 6: Match the sentences in column A with the sentences in column B. Then write full sentences by using Because. A B 1. I am very hungry now 1. a. he brushes them three times a day 2. He has strong with teeth. 2. b. he is having a toothache 3. We wash our hands before meals 3. c. she is very kind and skillful 4. Hoa is not afraid of the dentist 4. d. we want to have a healthy living 5. Nam looks unhappy 5. e. I didn’t 1. ……………………………………………………………………………............. 2. ……………………………………………………………………........................ 3. ………………………………………………………………………………........ 4. ……………………………………………………………………………………… 5. ……………………………………………………………………………………… Ex 7: Write the questions and answer Why…? and because: e.g: Minh/ have a toothache/ a lot of candies. - Why does Minh have a toothache? – Because he ate a lot of candies. 1. she/ be worried/ see dentist. …………………………………………………………………………………………………………………….……………………………………………………………… 2. Ba/ be scared/ sound of the drill. …………………………………………………………………………………………………………………….……………………………………………………………… 3. He/ feel calm/ dentist kind …………………………………………………………………………………………………………………….……………………………………………………………… 4. Lan/ feel better/ fix the tooth. …………………………………………………………………………………………………………………….……………………………………………………………… 5. Nam/ be happy/ teeth healthy. …………………………………………………………………………………………………………………….……………………………………………………………… 6. They/ play soccer well/ practice every day. …………………………………………………………………………………………………………………….……………………………………………………………… 7. Lan and Hoa/ do morning exercises every morning/ want to have a healthy life. …………………………………………………………………………………………………………………….………………………………………………………………