Some women () a good salary in a job instead of staying home, but they decided not to work for the sake of the family.

A. must make

B. should have made

C. would make

D. could have made

以下isprime函数的功能是判断形参a是否为素数。是素数，函数返回1，否则返回0。请填空。
int isprime(int a)
int i;
for(i=2; i＜=a/2; i++)
if(a%i==0)______;
______;