问题
选择题
Our hometown is quite different from _______before.
A．that is was
B．what it was
C．which it was
D．when it was
答案
答案：B
what引导的从句作介词的宾语，并在从句中兼作表语，而that,which,when则不能。
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Our hometown is quite different from _______before.
A．that is was
B．what it was
C．which it was
D．when it was
答案：B
what引导的从句作介词的宾语，并在从句中兼作表语，而that,which,when则不能。