问题
选择题
They looked __________ at his burnt clothes and didn’t know __________ to do.
A．sad; what
B．sadly; how
C．sadly; what
D．sad; how
答案
答案：C
本题考查词性及关系词。look为动词，故用副词修饰，根据句意是：不知道做什么？故用what。选C。
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