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

游客2024-07-16 36

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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Healwayshasgreattrouble(understand)______whattheteachersaysinclass.un