It’s a rule in my class that our classroom ______ before 6:00 p.m. every day.
#44688
A
be able to clean
B
should be cleaning
C
must clean
D
must be cleaned
推荐题目
—Our school _________ in 1876. —Wow, it has a very long history.
#44656
A
built
B
was built
C
is built
D
has built
Todd ________ a job in a bank, but to our surprise he didn’t take it.
#44498
A
offered
B
is offered
C
was offered
D
has offered
 Can’t you see that sign? Taking photos _______ here. 
#44371
A
aren’t allowed
B
don’t allow
C
isn’t allowed
D
doesn’t allow