单项选择题

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

A．have found
B．will find
C．will have found
D．are finding
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单项选择题
______ was to return to school.
A．That really interested him
B．What really interested him
C．Which really interested him
D．That interested him really
单项选择题
______ they've moved, we won't see them very often.
A．Now that
B．So that
C．As soon as
D．When
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