答案：B

考查非谓语动词。which指代的是taking a part-time job or staying at home,做enjoy的宾语（动宾），符合enjoy doin sth；to spend是想要表达目的，将要怎样度过你的假期。

本来的顺序应该是：Which do you enjoy taking a part-tine job or staying at home  to  spend your summer holiday?句意：你喜欢怎样去度过你的暑假，是做兼职还是呆在家里呢？