771.What do you think of store shopping in the future?
Personally,I think it will exist along with home shopping but ___.
A.will never replace
B.would never replace
C.will never be replaced
D.would never be replaced
772.How's your new babysistter?
We ____ ask for a better one.All our kids love her so much.
A.should
B.might
C.mustn't
D.couldn't
771.答案是C;根据I think it will exist along with home shopping，排除B和D;考虑到被动语态，选C。
772.答案是D;根据We couldn't ask for a better one得知，她是最佳人选，故选D。
