单项选择题

______ the cause, they were able to propose to a remedy.

A．Found
B．Having found
C．Have found
D．Having been found
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单项选择题
The students ______ their papers by the end of this month.
A．have finished
B．will be finishing
C．will have finished
D．have been finishing
单项选择题
The teacher, together with her students, ______ the beach to swim.
A．goes to
B．go to
C．goes
D．go
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