Tina’s train arrived ahead of schedule, …. I had decided to go to the train station early, she would have waited there for more than twenty minutes before I arrived.
A.unless
B.if
C.otherwise
D.supposed that

....it were well paid, I would accept this proposal.
A.Providing
B.Unless
C.But for
D.If only

Were we ….. children, we’d need to move to a bigger house, this one is too tiny for a family and two dogs.
A.to have
B.have
C.having
D.Had it not been

Were you to win (A) a huge sum of (B) money, what (C) would you have bought (D)?
A.to win
B.sum of
C.what
D.have bought

She had to have the operation or she.... .
A.dies
B.will die
C.would die
D.would have died

.... to the music after 10 pm, you should turn the volume down or use an earphone.
A.If you are listening
B.Unless you listen
C.Provided you won’t listen
D.Otherwise you listen

.... , tell him I have gone to London.
A.If Mr. Jones called
B.Unless Mr. Jones calls
C.Should Mr. Jones call
D.If Mr. Jones will call

Practice more and more.... you can never speak English fluently.
A.and
B.or
C.in case
D.if

…. , they would not have had such a successful conference
A.Due to good preparations
B.But for they had had good
C.Without good preparations
D.If their good preparations

Call your parents…. they will start to worry.
A.if only
B.otherwise
C.if so
D.in case