We need to set about a solution.[ ]
A. to find
B. to finding
C. finding
D. find
答案:C
计算:201×(-199)
妈妈每个月的工资是1800元,按规定超出1600元的部分要按5%缴纳个人所得税,妈妈每月需缴纳个人所得税( )元。