Areportsayshundredsoftrees____

发布时间：2020-07-27 19:42:34

A report says hundreds of trees ________ in the Amazon（亚马逊河）rain forest last year.A.was cut downB.have been cut downC.were cut downD.has been cut down

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C解析由last year可知应用一般过去时；trees为复数，故be动词为were。
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