选择题They have fun ____ playing games.A.ofB.onC.inD.at

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选择题They have fun ____ playing games.A.ofB.onC.inD.at
选择题They have fun ____ playing games.
A.of
B.on
C.in
D.at

选择题They have fun ____ playing games.A.ofB.onC.inD.at
选a,因为玩前面无冠词,排除b,c,d三项,并且玩前可以加介词of