20.( )Study hard, ___________you are sure to have a good result in the exam.
A or B and C for D but
19.( ) The sports meet will continue_____ it rains this afternoon.
A if B since C as soon as D unless
18.( )It’s very nice--------------- you to give me the chance.
A of B for C to D at
17.( ) I didn't know anything about it_______my father told me.
A. until B. because C. if D. after
16.( ) It was so late, _________ the farmers went to working in the field.
A. and B. or C. so D. but
15.( ) There are two classes____ Saturday afternoon. We can not have a rest this weekend. A. at B. on C. in D. of
14.( ) Here are some flowers ________ you ________ our best wishes.
A. to; for B. for; with C. of; to D. from; to
13.( ) Soccer is different American football. It’s played all over the world.
A. from B. for C. in D. on
12.( ) - Time to go to bed, Mary.
-Oh, Mum, I won’t go to bed I have finished my homework.
A. after B. since C. until D. as soon as
11. The accident happened _______ a cold winter morning.
A. in B. on C. at D. of
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