1. Having for ten minutes,I succeeded in convincing him that there was no danger.

2.I have no intention of going to see film.I couldn't bear seeing my favorite actresses in such a dreadful part.

3.I was just about to leave the office when the phone rang.

4.Wouldn't it be better to ask Tom to leave his camera at home?

5.We'd better start early.We don't want to risk getting caught in a traffic jam.

6.I look forward to hearing from you.

7.They don't allow smoking in the petrol station.

What ➙ Who    

mothers ➙ mother

1. There used to be some trees in the field. (Câu này mình đổi một chút)

2. Anna used to live with her parent.

3. He used to be a poor man, but he becomes a rich businessman.

4. They didn't use to go to the cinema every Sunday last year.

met

Vận tốc của máy bay là:

\(v=\dfrac{s}{t}=\dfrac{1800}{2,5}=720\left(\dfrac{km}{h}\right)\)