1.        Please  remember ………………….(buy)  some stamps.

2.       I remember …………the letter some time ago but I can’t remember exactly when .(to post, posted ,posting, post)

3.      Don’t forget (lock)…………the door before going out.

4.      We spent much money (light)…………

5.      We should avoid (play)………………video game.

6.      Do/Would you mind (open)………the door.

7.      Do you mind If I (use)……………….your bike.

8.      Would you mind If I (take)…………………..a photo.

9.      It takes her 15 minutes ………...…to school.                  (go)

10.  It’s time for us (study)……………………..English more and more.

11.  It’s time We(study)…………………….harder.

12.  She is fond of (collect)……………….stamps.  By……….(use) solar energy We can save money.

13.  He began (take) …………....the course in the summer of 2010.