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问题: She used to be an ordinary girl, what on earth has

She used to be an ordinary girl, what on earth has made her ___ she is today?
选项:
a、that
b、what
c、which
d、as

解答:

选B.
what引导名词性从句,从句作make的宾语。she is缺表语。名词性从句中缺主、宾、表一律用what.