The program was so exciting that the children kept their eyes____on the screen

The program was so exciting that the children kept their eyes____on the screen
A.to fix B.to be fix C.fixed D.fixing
句子的意思是什麽?
英语人气:840 ℃时间:2020-03-19 08:36:46
优质解答
keep doing sth.保持持续做某事
所以选D
doing 是持续的状态
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