单项选择题

By the end of this month, we surely ______ a satisfactory solution to the problem.

A．have found
B．will be finding
C．will have found
D．are finding
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单项选择题
Of all the story books, I like this one ______. It's not interesting at all.
A．very much
B．the best
C．very less
D．the least
单项选择题
You'll have to spend ______ whiting your report here.
A．one day or two days
B．one day or two
C．a day or two
D．two days or one
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