问题

Look! Someone is cutting a tree on the moon.–It _______ be true, Granny. Our teacher says there isno air there.

A: can't
B:mustn't
C:may
D: should

正确答案是：

同类题型

_anurse, she knew how to take care of a patient.

The terrorists（恐怖分子）in Xinjiang ______ last month.

Please check your paper to there are no mistakes.

Kate, I met two aliens in my garden last night. —______

eone has toanaction or policy, they are responsible for it, and may be required toexplain it to other people or be punished if it fails