Although his family is poor, but he studies very well.
A.is
B.but
C.studies
D.well

_______(37)
A.changing
B.transferring
C.exchanging
D.giving

_____(39)
A.have
B.have had
C.are having
D.had

________(40)
A.so much
B.such much
C.so many
D.too much

That factory is producing more and more pollution.
A.Pollution is being produced more and more by that factory.
B.More and more pollution is produced by that factory.
C.More and more pollution are being produced by that factory.
D.More and more pollution is being produced by that factory.

Without transportation, our modern society could not exist.
A.Our modern society could not exist if there is no transportation.
B.Our modern society will not exist without having transportation.
C.If there were no transportation, our modern society would not exist.
D.If transportation no longer exists, our modern society will not exist.

The last time when I saw her was three years ago.
A.I have often seen her for the last three years.
B.About three years ago, I used to meet her.
C.I have not seen her for three years.
D.I saw her three years ago and will never meet her again

Ms. Young, to _________many of her students are writing, is living happily and peacefully in Canada.
A.who
B.whom
C.that
D.whose

Finally, they succeeded _________finding a cure for that strange disease.

A.with
B.on
C.to
D.in

You will spend at least one year working abroad _________you can find out how things operate overseas.

A.as long as
B.because
C.so as to
D.so that