I’d rather you did some social research when you are free, but you _____.
A. didn’t B. weren’t C. wouldn’t D. don’t
I’d rather you did some social research when you are free, but you _____.
A. didn’t B. weren’t C. wouldn’t D. don’t
D
would rather 后接宾语从句，从句中用一般过去时，表示与现在事实相反的假设或愿望，连词but引出现在的情况，故答案为D项 一般现在时。