问题

I _______ have been more than six years old when the accident happened.

A:shouldn’t
B:couldn’t
C:mustn’t
D:needn’t

正确答案是：

同类题型

Look! Lots of people there. What’swrong— An old lady was going across the road________ a car hit her.

It is broadcast that the opera Cats at the Theatre Royal on 19th March.

Every pupil is ______to be in the classroom at 7.am

He is listening _____, but he can ____ hear anything.

Our bodies are strengthened by taking exercise________，our minds are developed by learning [ ]