Dưới đây là các từ phù hợp cho mỗi câu:

1. I regret **to inform** you that your loan application has not been approved.
2. I regret (not) **listening** to my father’s advice. He was right.
3. When a student asks a question, the teacher always tries **to explain** the problem as clearly as possible.
4. I tried everything, but the baby still wouldn’t stop crying. I tried **to hold** him. I tried **to feed** him.
5. Did you remember **to give** Jake my message?
6. I remember **playing** with dolls when I was a child.
7. What do you remember **doing** when you were a child?

Hy vọng điều này giúp ích cho bạn!