帮忙解释几道英语题,谢谢啦!O(∩_∩)O~
1-.Itmusthavebeenhardword.-Yes,it_____Dr.Yuanmorethan20yearstodevelopthesuperhybridri...
1-.It must have been hard word.
-Yes,it_____Dr.Yuan more than 20 years to develop the super hybrid rice.
A.takes B.has taken C.was taking D.took
答案:D
2.--Did you go to Mrs.Smith's birthday party?
--Of course.Every boy and every girl in our class______.
A.has been invited B.have been invited C.was invited D.were invited
答案:A 展开
-Yes,it_____Dr.Yuan more than 20 years to develop the super hybrid rice.
A.takes B.has taken C.was taking D.took
答案:D
2.--Did you go to Mrs.Smith's birthday party?
--Of course.Every boy and every girl in our class______.
A.has been invited B.have been invited C.was invited D.were invited
答案:A 展开
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