【題目】—If only I__________ morning exercises regularly earlier!

—Yes. Be quick to join us now.

A. do B. did C. have done D. had done

【答案】D

【解析】句意：——如果我早一點養(yǎng)成定期晨練的好習慣就好了！——是啊，現(xiàn)在快點加入到我們當中來吧。根據(jù)句意和信息詞earlier提示是虛擬過去，故用過去完成時。

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