Choose the best answer to complete each unfinished sentence.
This is an expensive ________ very useful book.
A.but
B.so
C.therefore
D.however

Choose the best answer to complete each unfinished sentence.
The desert biome includes the hottest places in the world because it absorbs more ________ from the sun than land in humid climates do.
A.heat
B.hot
C.hotly
D.heating

Choose the best answer to complete each unfinished sentence.
________ is the process by which a piece of land becomes dry, empty, and unsuitable for growing trees or crops on.
A.desert
B.deserted
C.desertify
D.desertification

Choose the best answer to complete each unfinished sentence.
If you look on a map you will see that there is a desert next ________ the Rocky Mountains in the United States.
A.of
B.to
C.with
D.for

Choose the best answer to complete each unfinished sentence.
The wind that blows in the desert comes ________ far away waters.
A.for
B.with
C.in
D.from

Choose the sentence which has the closest meaning to the original one.
Slippery as the roads were, they managed to complete the race.
A.The roads were so slippery that they could hardly complete the race.
B.The roads were slippery but they managed to complete the race.
C.The roads were slippery so they could hardly complete the race.
D.The roads were so slippery; therefore, they could hardly complete the race.

Choose the sentence which has the closest meaning to the original one.
Because it was an interesting novel, I stayed up all night to finish it.
A.I stayed up all night to finish the novel, therefore, it was interesting.
B.Unless it were an interesting novel, I would stay up all night to finish it.
C.Though it was an interesting novel, I stayed up all night to finish it.
D.So interesting was the novel that I stayed up all night to finish it.

Choose the best answer to complete each unfinished sentence.
Cold deserts can be covered in ________ snow or ice and frozen water is unavailable to plant life.
A.a
B.an
C.the
D.Ø

(35) _____
A.spend
B.take
C.last
D.experience

(33) _____
A.when
B.while
C.as
D.because