1.
If you have been careful, you could have avoided the accident.

2.
You are a most unusual person.

3.
Unless the population growth stabilised environmentalists predict a worldwide starvation by 2000 A.D.

4.
The meeting was postponed owing to lack of quorum.

6.
About a thousand sportsmen from all the colleges have arrived, the highest contingent being from Delhi.

7.
We had stop for petrol because we had hardly much left.

8.
He hesitated to accept the post as he did not think that the salary was enough for him to sustain his family.

9.
As they met again at 9 p.m. he said, "Good night, very pleased to see you again."

10.
He is so handsome man that people turn round to look at him.