填空题

While (wait) ______ there, he saw two beautiful girls come out of the building.

【参考答案】

wailing
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单项选择题
A．$50.B．$150.C．$180.D．$540.
A．$50.
B．$150.
C．$180.
D．$540.
填空题
Luckily enough, we have finished (write) ______ the composition in a quarter of an hour.
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