.The police an organization which protects the public from harm .
A.are | B.was | C.were | D.is |
Polar bears live mostly on __________ sea ice, which they use as __________ platform for hunting seals.
A.a; a | B.a; the | C.不填; a | D.the; 不填 |
—How about __________ Christmas evening party?
—I should say it was __________ success.
A.a; a | B.The; a | C.a; 不填 | D.the; 不填 |
I looked under __________ bed and found __________ book I lost last week.
A.the; a | B.the: the | C.不填; the | D.the; 不填 |
Students should be encouraged to use _____ Internet as _________ resource.
A.不填; a | B.不填; the | C.the; the | D.the; a |
The biggest whale is ___ blue whale, which grows to be about 29 meters long—the height of ____ 9-story building.
A.the; the | B.a; a | C.a; the | D.the; a |