It's a good way to do some warm-up exercises before _____ baseballA.playB.to playC.playedD.play限It's a good way to do some warm-up exercises before _____ baseballA.playB.to playC.playedD.playing
问题描述：
It's a good way to do some warm-up exercises before _____ baseballA.playB.to playC.playedD.play限
It's a good way to do some warm-up exercises before _____ baseball
A.play
B.to play
C.played
D.playing
答
d before 后根ING
答
你好，很高兴能够在这里回答你的问题， 填写
选D
介词后面只能跟名词或动名词，所以只能选动名词playing
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答
D
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