题目内容
He has been ill for several weeks, so he has ______ in learning Maths.
A. many difficulties B. some difficulty C. a lot of troubles D. a trouble
A
练习册系列答案
相关题目
题目内容
He has been ill for several weeks, so he has ______ in learning Maths.
A. many difficulties B. some difficulty C. a lot of troubles D. a trouble
A