问题
选择题
Many workers were organized to clear away ________ remained of the World Trade Center.
A．those
B．that
C．what
D．where
答案
答案：C
此处what="the" thing（s）that，引导名词性从句，且在从句中作主语。
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Many workers were organized to clear away ________ remained of the World Trade Center.
A．those
B．that
C．what
D．where
答案：C
此处what="the" thing（s）that，引导名词性从句，且在从句中作主语。