The vegetables in his field ________ wel...

The vegetables in his field ________ well, because they are pollutionfree.

A．are selling B．have been sold

C．are sold D．sell

D 【解析】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。

考点分析：

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