So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ____ .
#88293
A
mustn’t be
B
may not be
C
can’t be
D
won’t be
推荐题目
The officer commanded that the supplies of food and clothes ______ to the flooded area.
#86801
A
should send
B
be sent
C
were sent
D
would send
I wish you _____ go to the art gallery with us. If there _____ enough tickets, I’d let you know.
#87859
A
can, were
B
could, were
C
will, were
D
will, is
——Why did you not come to the party? ——I ______ it, but my car broke down on the way.
#86420
A
attended
B
had attended
C
would attend
D
would have attended