Polluted water and increased water temperatures have driven many species to the verge of extinction
A.enriched
B.contaminated
C.purified
D.strengthened

Not until the dedication of Yellowstone Park in the late nineteenth century _____ a national park.
A.the United States had
B.did the United States have
C.when the United States had
D.the United States having

Using many symbols makes _____ to put a large amount of information on a single map.
A.it possible
B.possible
C.it is possible
D.that possible

She kept him _____ because he had a high temperature.
A.on
B.in
C.off
D.out

_____ wooden buildings helps to protect them from damage due to weather.
A.The paint
B.Painted
C.By painting
D.Painting

It takes me 15 minutes to get ready.
A.to prepare
B.to wake up
C.to go
D.to get up

It is vitally important that she takes this medication night and morning.
A.vitally
B.that
C.takes
D.medication

Had it not been for you help me, I wouldn't have succeeded.
A.not
B.you help me
C.wouldn't
D.succeeded

We had better to review this chapter carefully because we will have some questions on it on our test tomorrow.
A.to review
B.carefully
C.will
D.some

French is the only language other than English spoken on five continents.
A.French and English are spoken widely in official and commercial circles.
B.Unlike French, English is spoken on five continents.
C.French and English are the only languages that are spoken on five continents.
D.Before English, French was the only language spoken on five continents.