— What does the sign over there say?— No person ______ enter the area without the official permission.
#63455
A
shall
B
may
C
must
D
will
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You needn’t have come in person --- a letter _____enough.
#63450
A
would be
B
is
C
would have been
D
was
It’s time _____ class. You must _____ the classroom.
#75805
A
to; to go
B
for; go to
C
to; to go
D
for; to go