单项选择题

When the giant building ______, a likely or proper location was selected.

A．was established
B．was being established
C．had been established
D．was to be established
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单项选择题
The wind was so strong that it tore the flag ______.
A．by half
B．at half
C．in half
D．by halves
单项选择题
Water is to fish ______ air is to man.
A．that
B．what
C．like
D．as
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