they spent all night ( )the work .so they were very tired in the _英语解答

they spent all night ( )the work .so they were very tired in the morning.
A.do B.doing C.to do D.did

人气：280 ℃　时间：2019-09-29 03:55:14

解答

B
spent some time on doing sth
其中on可以省略,后面跟ing形式
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