题目内容
________ is important to master at least a foreign language in modern times especially after China’s entry WTO.
[ ]
A.
That
B.
What
C.
This
D.
It
答案:D
解析:
解析:
|
本句子的真正主语是to master…,it在此作形式主语。形式主语或形式宾语只能用it。 |
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