The soldiers tried their best and did what they could against the flood.A. fightB. to fig

发布时间：2020-08-17 13:26:23

The soldiers tried their best and did what they could      against the flood.
A. fight
B. to fight
C. fighting
D. fought

网友回答

A. fight
(答案→)B. to fight
C. fighting
D. fought
解析：could后面省略了实义动词do；what they could(do)作前面动词did的宾语，故后面用不定式作目的状语。
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