题目内容

The vegetables in his field ________ well, because they are pollution­free.
A．are sellingB．have been sold
C．are soldD．sell
D
D 考察动词的时态语态。句义：他田里的蔬菜销售得很好，因为它们是无污染的。某些课用来表示主语内在品质或者性能的动词，如sell ,wash, feel, read等，其主语通常都是物，承受动作课用主动形式表示被动含义，且不用进行时。故D正确。
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