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
I expect they （） new energy source to replace petrol by 2020.

A. will find
B. are going to find
C. will be finding
D. will have found
单项选择题
It’s reported that by the end of this month the output of cement in the factory （） by about 10%.

A. will have risen
B. has risen
C. will be rising
D. has been rising
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