单项选择题

（） a satisfactory answer, so he had to write to them a gain.

A．As he hadn't received
B．Not having received
C．Having not received
D．He hadn't received

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单项选择题
Every large city has its shifting population of vagrants. But in most （）, these are poor men.

A．conditions
B．cases
C．situations
D．circumstances
单项选择题
（） his money lost than he began to cry and shout loudly.

A．Hardly he has found
B．No sooner had he found
C．Not until did he find
D．When he found
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