问题
选择题
-– I wonder how much you charge for your services.
--- The first two are free the third costs $30.
A．while
B．until
C．when
D．before
答案
A
While这里表示对比关系。这里考查连词引导的状语从句。
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-– I wonder how much you charge for your services.
--- The first two are free the third costs $30.
A．while
B．until
C．when
D．before
A
While这里表示对比关系。这里考查连词引导的状语从句。
