问题

Look! Our headmaster is standing at the school gate.–It _______ be our headmaster. He is taking a student to the hospital now.

A:can
B:can’t
C:must
D:mustn’t;

正确答案是：

同类题型

Theforestguardsoftenfindcampfiresthathavenotbeen________completely

My mother used to make breakfast for _____ every morning, but now I do it myself.

May I swim in the lake, mum –No, you_______. Look! Here is a notice “No Swimming!”

I’d like to talk to someone who looks .

We must behave ____ at a formal table.