Everyone in our class was working hard and doing what we could a good college. A

Everyone in our class was working hard and doing what we could _______ a good college.

A. enter B. to enter

C. entering D. entered

试题答案

B

此句为省略句，即在 could 后省略了动词 do，若把句子补完整应为Everyone in our class was working hard and doing what we could do to enter a good college。