单项选择题

We adopted the new methods with a view to __________ our efficiency.

A．raise
B．raising
C．rise
D．rising
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单项选择题
__________ either of them taken part in the performance
A．Have
B．Is
C．Has
D．Are
单项选择题
The moment has came __________ I can fully display my ability.
A．that
B．which
C．when
D．what
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