1.I am interested in (work)working with young children

2..(read)Having read it several times , he didn't want to read it once again

3. they decided (buy)to buy a new car.

4.by the time sheila got back ,chiris (go) had gone home.

1. I am interested in (work) working with young children

Cấu trúc: Interested in + Ving

2. Having read it several times , he didn't want to read it once again.

Giải thích:  Vì several times là thì hiện tại hoàn thành, mà đầu câu phải thêm ing.

3. They decided to buy a new car.

Cấu trúc: Decided + to V

4. By the time sheila got back, Chiris had gone home.