They _______ the fire and helped the old man out.
| A．put out | B．put on | C．worked out | D．went out |
— Did you go to Kunming on vacation?
— No, but it’s a good place _____ I often dream of going.
| A．what | B．which | C．where | D．that |
They will telephone the police and complain about it the noise.
| A．if; stops | B．unless; stops | C．if not; stops | D．unless; doesn’t stop |
— Bill, is the pink umbrella Anna’s?
— No, it _____ be hers. Hers is purple.
| A．can | B．may not | C．would | D．can’t |
Mr Wang’s lessons are _____, so his students like him very much.
| A．alive | B．live | C．living | D．lively |
Milk quickly goes bad in summer it is in a fridge(冰箱).
| A．if | B．because | C．unless | D．when |