——Now lots of teenagers spend a lot of time playing computer games.
——Yes. Teachers and their parents should prevent them ______________ too much.


  1. A.
    to play
  2. B.
    play
  3. C.
    plays
  4. D.
    playing
D
試題分析：prevent sb. (from )doing sth.表示“阻止某人做某事”，這是一個(gè)固定用法。本句的意思是“老師和家長(zhǎng)應(yīng)該阻止他們玩的太多�！彼员绢}選D。
考點(diǎn)：本題考查動(dòng)詞。
點(diǎn)評(píng)：對(duì)于prevent的用法，應(yīng)該熟練掌握，其用法與stop和keep的用法一樣，都表示“阻止某人做某事”。
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