Candies have bad______effects teeth. [ ]A. on B. at C. in D. fo

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Candies have bad______effects  teeth. [     ]
A. on
B. at
C. in
D. for

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举一反三

Li Ping,what are you doing now? Why is the room_________smoke?  [     ]
A. fill with
B. filled of
C. full of
D. is full of

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Shanghai will host the World Expo _____May.[     ]
A. in
B. on
C. to
D. at

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填空。
1. Please hand the bottle of orange _____ (给) your sister.
2. He agreed _____ _____ (卖) his car for buying house.
3. Mr. White is a rich man. So he _____ _____ (支付得起) a trip abroad.
4. These new products _____ _____ (将花费) a lot of money.
5. He earned much money. Now he _____ _____ _____ _____ (已经能够) pay for his loans (贷款) .

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My father was born _____September 20th,1970. [     ]
A. at
B. on
C. of
D. in

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My father has gone to the countryside. He"ll be back_____ three days.[     ]
A. out
B. before
C. in
D. after

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