_________, the world would be more harmonious.
| A．Weren't there any wars |
| B．There weren't any wars |
| C．Were there no wars |
| D．Had there no wars |
Tom is so independent that he never asks his parents' opinion _________ he wants their support.
| A． |
since |
B． |
once |
C． |
unless |
D． |
after |
The professor warned the students that on no account _____________ use mobile phones in his class.
| A． |
should they |
B． |
they should |
C． |
dare they |
D． |
they dare |
Their child is at the stage__________ she can say individual words but not full sentences.
| A． |
why |
B． |
where |
C． |
which |
D． |
what |
Most colleges now offer first-year students a course specially ___________ to help them succeed academically and personally.
| A． |
designed |
B． |
designing |
C． |
to design |
D． |
being designed |
Kate heard a man's voice in the background, but she couldn't ___________ what he was saying.
| A． |
set aside |
B． |
take back |
C． |
make out |
D． |
keep off |