就是时态的问题
你看下句子中的时间状语是last year
所以时态肯定是一般过去式
那符合时态的只有A. C
因为hundreds and thousands of trees,作主语的是trees,是复数,所以选were,肯定是被动语态
故只能选C
2006 山东临沂A report says hundreds and thousands of trees ______in the Amazon rainforest last year
2006 山东临沂A report says hundreds and thousands of trees ______in the Amazon rainforest last year
A.was cut down B have been cut down
c were cut down D had been cut down
我选的是D
A.was cut down B have been cut down
c were cut down D had been cut down
我选的是D
英语人气：807 ℃时间：2019-08-22 15:26:21
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