It has been announced that passengers ____ remain in their seats until the dangerous subjects have been removed.
#90050
A
can
B
will
C
may
D
shall
推荐题目
The doctor insisted that the patient _______ seriously ill and that an operation _______ in no time. 
#87540
A
was; be carried out
B
should be; be carried out
C
was; was carried out
D
should be; was carried out
When I first met him, it seemed as if he______food for days.
#87114
A
did not eat
B
had not eaten
C
was not eating
D
would not have eaten
Don't handle the vase as if it ______ made of steel.
#87420
A
is
B
were
C
has been
D
had been