单项选择题

Their parents once 1iVed under very severe conditions．

A．sound
B．hard
C．strict
D．tight
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单项选择题
The researchers have just completed a study of driving situations．（）

A．started
B．finished
C．changed
D．made
单项选择题
It seems highly unlikely that she will pass the exam．
A．very
B．completely
C．usually
D．-mostly
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