【題目】The math problems are too difficult. Can you help me______?

A. Work it out B. work on it C. work them on D. work them out

【答案】D

【解析】試題分析：句意：這些數(shù)學(xué)題太難了。你能幫我算出來(lái)嗎？算出用work out，這種短語(yǔ)的賓語(yǔ)是代詞的話，能且只能放在中間；根據(jù)前面的The math problems是復(fù)數(shù)，故可用them代替。故選D。

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