He always has great trouble (understand)______what the teacher says in class.und

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问题 He always has great trouble (understand)______what the teacher says in class.

选项

答案 understanding

解析 have trouble(in)doing sth. 为固定用法，表示“做…有困难”。

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Thisisratherforyourteachertodecidethanforyou.A、这是你老师的决定而不是你的决定。B、这取决于