Do you know that fish sleep __their eyes__?

问题描述:

Do you know that fish sleep __their eyes__?

Do you know fish sleep "with" their eyes "open"?

还是用with对啊,表示状态嘛
后面当然是open啊,鱼睡觉是睁眼的啊

but
open

with
open

with
open

keep (their eyes) open

既可以用独立结构——with their eyes open或with their eyes opened
也可以用分词短语——keeping their eyes open或keeping their eyes opening