The ground is slippery. Hold on to the rope and don’t ______.
A.put off | B.turn up |
C.let go | D.take apart |
It was in the university ten years ago, _________ they met in September for the first time, _________ they fell in love with each other.
A.that; when | B.when; that | C.that; where | D.where; that |
Professor Smith, along with his assistant, ________on the project day and night to meet the deadline.
A.work | B.working | C.is working | D.are working |
Some researchers believe that there is no doubt ______a cure for AIDS will be found.
A.which | B.that | C.what | D.whether |
If you go by _________train, you can have quite a comfortable journey, but make sure that you get_fast one.
A.the; the | B./; a | C.the; a | D./; / |
—I would like to pick up your sister for you. But I don’t know her. _____?
—A middle-aged woman with a round face, wearing a red blouse.
A.How about your sister? |
B.What do you think of your sister? |
C.What is your sister like? |
D.What does your sister do? |