问题

Now lots of teenagers spend a lot of timeplaying computer games.——Yes. Teachers and their parents shouldprevent them ______________ too much.

A:to play
B:play
C:plays
D:playing

正确答案是：

同类题型

15. In an emergency, you should remain _____.

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ory is moving, and the questions, I suppose, arenot so difficult as they appear ______

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