All flights ________ owing to the heavy fog, many passengers could do nothing but take trains.
| A．to be cancelled | B．were cancelled |
| C．have been cancelled | D．having been cancelled |
—I suppose he’ll pass the exam, _______________? —Of course he will.
| A．will he | B．won’t he | C．don’t I | D．do I |
Cigarettes and alcohol do such ________ great harm to health that they can easily cause ________ weakening of our bodies.
| A．a; / | B．/; the | C．a; the | D．/; / |
-- Sorry to disturb you, ________ can I use your phone?
-- Oh, go ahead.
| A．and | B．if | C．when | D．but |
______ sweet and fresh, this kind of food is so popular with local people and the tourists.
| A．Smell | B．Smelling | C．To smell | D．Smelt |
---Fifty dollars for such a T-shirt！You_____ be joking！
--- I’m serious. It’s made of silk.
| A．must | B．need | C．may | D．can |