1. Let's go to the beach now. --> Why don't we go to the beach now?
2. I think you should sell your car. --> If I were you, I should sell your car.
3. How about going for a pizza?--> Let's go for a pizza.
4. Is it all right if you take care of the children.---> Would you mind taking care of the children?
5. She was very tired so she went to bed. --> she went to bed because she was very tired.
6. The concert was cancelled because the singer was ill. --> because of the singer's illness, the concert was cancelled.
7. Why don't you put a letter lock on the door, Join?, Jane said ----> Jane suggested putting a letter lock on the door
8. Because of her bad behavior, everybody hates her. ----> Because she behaves badly, everybody hates her.