题目内容
19．______ eat in class．（ ）| A． | Not | B． | Can't | C． | Don't |
分析 不要在课堂上吃东西．
解答 答案：C．
根据题干结合选项推断设空处句子的句意是"不要在课堂上吃东西．"，本题考查否定祈使句，表示"不要做某事"，否定祈使句的结构是在动词前加don't．故选：C
点评 在学习中熟练掌握知识点，做题时先找出考点（祈使句），根据它的构成结构（动词原形开头）结合语境来选出正确的答案．
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