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-Three years ago.
A. When B. Why C. Where D. What
15. -________ do you write to your pen-friend?
-Once a week.
A. How long B. How soon C. How far D. How often
16. _______ nice flowers! Where did you pick them?
A. How B. What C. What a D. How a
17. The sick man’s allowed to take a walk in the garden every day, _______?
A. is he B. isn’t he C. has he D. hasn’t he
18. ______ cross the road before the traffic lights turn green.
A. Not B. Won’t C. Don’t D. Doesn’t
19. He found nothing in the room, _________?
A. doesn’t he B. does he
