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 ______.
#87593
A
ustn’t be
B
ay not be
C
an’t be
D
on’t be
推荐题目
—I didn’t go to the Museum yesterday. —Yes, but I would rather you ___there too.
#88945
A
went
B
had gone
C
should go
D
would have gone
The scientists are urging that the chemical _____．
#87240
A
is banned
B
should ban
C
be banned
D
must be banned
If no passers-by _____ a blind eye to the injured little Yueyue in Foshan Guangdong, she _____ alive now．
#87508
A
turned; would be
B
had turned; would have been
C
turned; would have been
D
had turned; would be
The WTO urged that all the countries ________ measures to prevent swine flu spreading.
#87758
A
take
B
must take
C
are to take
D
took
--- Fancy meeting you here!--- Pleased to see you. If they ________ me to the party, I ________ be here.
#87706
A
hadn’t invited; wouldn’t be
B
didn’t invite; wouldn’t be
C
hadn’t invited; wouldn’t have been
D
didn’t invite; won’t be