问题

The old lady didn’t know _______ when the house caught fire.

A:is used to, is used to
B:used to, used to
C:is used to, used to
D:used to, is used to;

正确答案是：

同类题型

We were ____ to go out for a camp ____ it began to rain

straight on and you’ll see a church . You won’t miss it.

Which of the following underlined parts is different in pronunciation from others

The wild population of pandas is in danger of _____.

In the past 50 years, under the leadership of the CPC, the situation of Tibet has___________much better than it used to.