问题
选择题
It is not until we know more about the situation ______ we are able to improve it.
A．that
B．what
C．when
D．which
答案
答案：A
考查强调句。本句是对not until引导的时间状语从句进行强调。It is not until…that…。
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It is not until we know more about the situation ______ we are able to improve it.
A．that
B．what
C．when
D．which
答案：A
考查强调句。本句是对not until引导的时间状语从句进行强调。It is not until…that…。