Every possible means ________, but the teacher as well as the students ________ found a solution to the problem yet.
#102485
A
has been tried; hasn’t
B
has tried; haven’t
C
have tried; haven’t
D
have been tried; hasn’t
推荐题目
— Is it all right if I come at about 8.30 ? — No, I ________ the football match then.
#103474
A
watch
B
will be watching
C
are watching
D
watched
If nothing______, the oceans will turn into fish deserts.
#99587
A
does
B
had been done
C
will do
D
is done
The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident.
#99890
A
find out
B
finding out
C
found out
D
be found out
---I’m sorry! I would have taken him to hospital if I had known he was seriously ill.--- But ______ .
#100438
A
you didn't
B
you hadn't
C
he wasn't
D
you aren't
Food supplies in the flood-stricken area _______. We must act immediately before there’s none left.
#100781
A
have run out
B
have been run out
C
are running out
D
are being run out