问题

You should have thanked her before she left.—I meant ________, but when I was leaving I couldn’t find her anywhere.

A:to do
B:to
C:doing
D:to have done

正确答案是：

同类题型

She finds her new jobs very __________ but she will never give it up.

There is no doubt _______international cooperation is the key to dealing with cyber crime.

It’s not as _______ as yesterday, so there are _______ children playing with their parents in thePeople’s Square.[ ]

35_____ of the mountain lay a big natural park

You must go to the ________ if you want to buy vegetables.