I wish my friends spent less time ______ computer games and more time outdoors.’

A. play                              B. to play

C. playing                         D. played

Question 13. At night they used to entertain ______ by telling and acting out stories.

A. them                  B. their

C. themselves        D. they

Question 14. ______ you need some help, I'll come over this afternoon.

A. Unless               B. While

C. Since                 D. Although

Question 15. We won’t go out ______ it stops raining.

A. if not                 B. unless

C. when                 D. if