问题

Teachers required that all the students ___ their homework all alone.

A:must finish
B: would finish
C:had to finish
D:finish

正确答案是：

同类题型

I have been told that the new law will comeinto ______ on January 1st next year

Don’t run in the classroom, you may hurt yourself.

We are all _______ in the game _______ “Travel in Space”.

____ the sun, nothing would grow

Is there any difference between your idea and ________