单项选择题

__________ either of them taken part in the performance

A．Have
B．Is
C．Has
D．Are
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单项选择题
The moment has came __________ I can fully display my ability.
A．that
B．which
C．when
D．what
单项选择题
No sooner __________ there than he fell iii.
A．had he arrived
B．he had arrived
C．had arrived he
D．arrived he
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