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

分类: 作业答案 • 2021-12-28 11:28:22

问题描述：

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