问题

Look at the boy running on the ground. Is it David– It _______ be him. I saw him go to the teacher’s office just now.

A:might
B:could
C:can’t
D:mustn’t;

正确答案是：

同类题型

If you are too formal, people around you won’t be _____[ ]

Are you a teacher—No, but I _______.

The number of students in ourschool ___ 9,000 and a number of them ___ from the city.

News came from the office __________ Wang Lin hadbeen admitted to Beijing University.

I am afraid I can’t return the book toyou before Friday——