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單項(xiàng)選擇題

Nobody knows how long and how seriously the shakiness（不穩(wěn)定） of big businesses will （） down the economy.

A.put
B.settle
C.drag
D.knock

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單項(xiàng)選擇題

I tried very hard to persuade him to join our group but I met with a flat（）

A.accept
B.agree
C.refusal
D.decline

單項(xiàng)選擇題

Our department（）courses in several foreign languages.

A.accepts
B.considers
C.offers
D.takes