My sister has a lot of trouble （）maths A.to learn B.learning C.learned D.learns

分类: 作业答案 • 2022-08-04 20:07:49

问题描述：

答

选B trouble 后面用动词ING形式

答

B
have trouble doing sth 做.有麻烦
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My sister has a lot of trouble （ ）maths A.to learn B.learning C.learned D.learns