Viết lại các câu sau cho phù hợp

Transformation:

1. They often go swimming on Sundays. They have much free time then.

-> They

2. She is not free, so she cannot join in our trip

-> If she

3. "Thank you very much for helping me with these assignments," Tom said to me

-> Tom thanked

4. How often does the mechanic service your car?

-> How often do