问题

Who’s that boy reading in the study ? Is it David?—It __________ be David. I saw him go home just now.

A:must
B:can’t
C:may
D:shouldn’t

正确答案是：

标签： boy , david , who

同类题型

Giant pandas will have to live if farmers keep ________ their living areas.

About _____ of the world population is Chinese.

________my sister and me.

The government of Chongqing is building ________ cheap and good houses for the people.

Why does she always ask you for help? —There is no one else ______, is there?