1. Why don't we cross the street inside the zebra crossing?

2. What about going swimming this afternoon?

3. Unless you finish your homework, you won't be accepted.

4. John used to smoke cigarettes when he was a young man.

5. In spite of being ill, Mrs Lan still came for a meeting.

1. Let not cross the street outside the zebra crossing.

=>Why don't we cross the street outside the zebra crossing.

2. Why don't we go swimming this afternoon?

=>What about going swimming this afternoon

3. You will not be accepted if you don't finish your homework.

=>Unless you finish your homework, you will not be accepted

4. John smoked cigarettes when he was a young man.

=>John used to smoke cigarettes when he was a young man.

5. Although Mrs.Lan was ill, she still came for a meeting.

=>In spite of being ill, she still came for a meeting.