问题

－When I first got to Harvard, my terrible English was a burden to me.－Oh, dear, it ________ a struggle for you to keep up with other students.

A:might be
B:can be
C:should have been
D:must have been

正确答案是：

同类题型

Where do you want to go to have dinner— I have no idea. _________________________.

How long may I ____ your dictionary—For one week. But it mustn’t ______ to others.

Though tigers are ______ to people, they are ______ now and we should protect them or they will die out.

The days are gone physical strength was all you needed to make a living．

I`m watching TV_______ my mother is cooking in the kitchen.