It’s time class. You must the classroom.A. to; to goB. for; go toC. to; to goD. for; to

问题补充：

It’s time class. You must the classroom.

A. to; to go

B. for; go to

C. to; to go

D. for; to go

答案：

A. to; to go

(答案→)B. for; go to

C. to; to go

D. for; to go

解析：句意：该上课了。你必须去教室。It’s time for sth是干某事的时候了； must必须，为情态动词后接动词的原形。故选B