题目内容
() 11. I spent much time the maths problem her,but she still didn’t know how to work it out.
A. on explaining;for B. in explaining;to
C. explaining;for D. to explain;to
11.B
11.B
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题目内容
() 11. I spent much time the maths problem her,but she still didn’t know how to work it out.
A. on explaining;for B. in explaining;to
C. explaining;for D. to explain;to
11.B