－I have great in learning math and I’m so worried. Could you help me?－Sure. I’d be glad t

问题补充：

－I have great in learning math and I’m so worried. Could you help me?

－Sure. I’d be glad to.

A. trouble

B. interest

C. time

D. fun

答案：

(答案→)A. trouble

B. interest

C. time

D. fun

解析：have great trouble in doing sth表示做事情有很大的麻烦，是固定短语。