all the cash crop —— before we placed an order.
A.is exported B.has been exported
C.will be exported D.has been exported
和关于这方面的知识点,感觉很多单选都是这样的好多“has been had been”不懂
D是had been exported
人气：180 ℃ 时间：2020-09-07 21:23:55
解答
has been是现在完成时,如果前一个动作是现在时,那么应该用现在完成时.
例：I go to Beijing.
I have been to Bejing.
had been是过去完成时,如果前一个动作是过去时,那么应该用过去完成时.
例：I went to Beijing.
I had been to Beijing.
推荐
猜你喜欢
