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Vegetablesarecheapwhentheyareinseason.A.tobuyB.tobuythemC.buyingD.tobebought

题目详情
Vegetables are cheap____when they are in season.
A.to buy B.to buy them C.buying D.to be bought
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答案和解析
当不定式作表语(或宾补)形容词的状语,又与句中的主语(或宾语)有逻辑上的动宾关系时,虽然不定式有被动意义,但只能用主动形式.eg:Some books are interesting to read ,but boring to learn有些书读起来很有趣,但学起来很枯燥.选A!