you need to keep your eyes _____when_____the game a.closed;play b.closing;playing c.closed;play

题目

you need to keep your eyes _____when_____the game a.closed;play b.closing;playing c.closed;play
d,close;you play

答案

You need to keep your eyes closed when playing the game.
keep...closed (adj.)眼睛闭上
when you play the game = when playing the game
省略主语,动词要变成ing的形式