Nelson Mandela is，__________ the greatest man of the 20th century，certainly among the most extraordinary leaders．
| A．if there | B．if any | C．if not | D．if so |
The classroom with windows_____ north wants_______ badly, so we’d better move the students into the classroom next door.
| A．facing; repaired | B．faces; repairing |
| C．faced; to be repaired | D．facing; repairing |
—I’m going to New York this evening. Is there a flight to New York then?
—There____ be a flight. But you’d better call the booking office to make sure.
| A．must | B．may | C．would | D．will |
—Bob! How is your project? I heard you started it last Friday, right?—Oh! I_______ for it. But I haven’t decided when to do it.
| A．have prepared | B．had prepared | C．have been preparing | D．was preparing |
Culture shock is a feeling____ most travellers experience in a foreign country____ they find the culture is quite different from that of their own.
| A．that; which | B．which; that | C．which; where | D．when; where |
A low-carbon lifestyle is of great benefit to improve_____ world environment. Nothing can be enjoyed from it until you have____ deep understanding of it, though.
| A．a; the | B．/; a | C．the; / | D．the; a |