问题描述：
-Why did Miss Wang look so worried when we saw her?-Because she wondered_.
A.where did the other students go B.when would the policeman come
C.what her students did during the trip
D.if her students leave the classroom
A.where did the other students go B.when would the policeman come
C.what her students did during the trip
D.if her students leave the classroom
问题解答：
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