题目内容
17．Mr．Anderson asked his students the experiment quietly．（ ）| A． | observe | B． | observes | C． | to observe | D． | observing |
分析 Anderson老师要求他的学生安静的观察这个实验．
解答 答案：C．根据Mr．Anderson asked his students the experiment quietly，可知这里考查了ask的用法，通常用于ask sb to do sth要求某人做某事，后面跟to引导的动词不定式．故选C．
点评 本题考查了动词不定式的用法．解答时注意ask sb to do sth要求某人做某事，后面跟to引导的动词不定式．
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