7. The police asked the children ______ cross the street ______ the traffic lights turned green.
A. not; before B. don’t; when C. not to; until D. not; after
6. In the zoo if a child _____ into the water and can’t swim, the dolphins may come up ______ him.
A. will fall; to help B. falls; to help
C. will fall; help D. falls; helping
5. ---Do you know if he _______ to play basket ball with us?
---I think he will come if he ______ free tomorrow.
A. comes; is B. comes; will be
C. will come; is D. will come; will be
4. _______ he’s old, he can still carry this heavy bag.
A. Though B. Since C. For D. So
3. ---I hope you’ll enjoy your trip, dear!
---Thank you, mum. I’ll give you a call _________ I get there.
A. until B. as soon as C. since D. till
2. ---Shall we go on working?
---Yes, _________ I prefer to have a rest.
A. when B. if C. because D. though
1. You will stay healthy _______ you do more exercise, such as running and walking.
A. if B. how C. before D. where
15. The man ________ we visited yesterday is a famous writer.
A. which B. what C. who D. to whom
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14. With the money _______ he saved, he could go on with his education.
A. it B. what C. this D. that
13. I like to live in a house _______ is big and bright.
A. that B. who C. how D. why