Over the past five years we ---(do)nothing,so we must -----(

问题描述:

Over the past five years we ___(do)nothing,so we must _____(do)something that we can____(do) now.
1个回答 分类:英语 2014-09-28

问题解答:

我来补答
have done Over/in/during the past five years 是现在完成时的标志
do
do
 
 
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