Giúp em ạ ! Em cần gấp !

Exercise 3: Rewrite the sentences keeping the same meaning, beginning as available. 1. I have to study. If 2. We had a lot of homework yesterday. If 3. It was very cold last night. If 4. They work slowly. If 5. She doesn't join in the trip. She 6.1 am not good at English. If 7. He does ...