The advertisement says the vacuum cleaner (吸尘器) can ______ everything from the floor. Do you believe it?
A.pick up |
B.take up |
C.make up |
D.put up |
When I knew Mary made every effort ______ the homeless, I could not but ______ her.
A.to help; admire |
B.to help; to admire |
C.helping; admire |
D.help; admiring |
About 71% of the earth’s surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.
A.is; doesn’t |
B.are; don’t |
C.are; doesn’t |
D.is; don’t |
Medical ______ shows that men are more likely to have heart attacks than women.
A.expectation |
B.evidence |
C.experience |
D.exchange |
Several years had passed ______ I finally realized the true value of friendship.
A.when |
B.that |
C.after |
D.before |
All passengers ______, please fasten your seat belts and remain seated ______ the plane is landing.
A.on board; before |
B.abroad; since |
C.on the board; after |
D.aboard; when |