——the farms have been to the US.___really?when there?a.did t
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——the farms have been to the US.___really?when there?a.did they go b.have they gone
选A.那些农民已经去过美国了.真的吗?他们什麽时候去的?
从第一句看出他们去过了,这是已经完成的事情,那么他们“去”美国这个动作是发生的过去的.在过去的时间下应该用过去式.
从第一句看出他们去过了,这是已经完成的事情,那么他们“去”美国这个动作是发生的过去的.在过去的时间下应该用过去式.
——the farms have been to the US.___really?when there?a.did t
The beef here ___really nice.Would you like to have a tast?
why did you keep it a secret from us?we ought to have been t
Have you been to the Space Museum?If yes,when did you go las
The people have to work hard__the farms.A at B in C on Dinto
The film star when I have been looking forward to hasn't tur
Did you go to the show last night A.were B.have been C.has b
我选C All of the plants now raised on farms have been develope
All of the plants now raised on farms have been developed fr
1.All of the plants now raised on farms have been developed
there doesn't seem to have been any difficulty solving the p
there have been several new events ____ to the program for t