单项选择—What’sthematter?—Iamhavingtrouble      whohastaken...

问题详情：

单项选择

—What’s the matter?

—I am having trouble       who has taken my dictionary.

              A、looking                                 B、finding out                     C、to find out

【回答】

B

知识点：动词和动词短语

题型：选择题