Upon into the blue sky ______ when we passed by its nest.
| A．did the bird fly | B．flew the bird | C．the bird flew | D．had the bird flown |
Water can absorb and give off a lot of heat without big changes in temperature, thus creating a __________ environment.
| A．peaceful | B．sensitive |
| C．common | D．stable |
This magazine is very __________ with young people, who like its content and style.
| A．familiar | B．popular |
| C．similar | D．particular |
—What do you think we can do for our aged parents?
—You __________ do anything except to be with them and be yourself
| A．don’t have to | B．oughtn’t to |
| C．mustn’t | D．can’t |
— My cat’s really fat.
— You __________ have given her so much food.
| A．wouldn’t | B．couldn’t |
| C．shouldn’t | D．mustn’t |
— What does the sign over there read?
—“No person __________ smoke or carry a lighted cigarette，cigar or pipe in this area.”
| A．will | B．may |
| C．shall | D．must |