The city ____ she was born is developing very fast.
| A．why | B．when | C．where | D．who |
As many as five courses are provided, and you are free to choose ______ suits you best.
| A．whatever | B．whichever | C．whenever | D．wherever |
He had to pause from time to time to wipe the sweat from his forehead, because the air-conditioning system.
| A． | broke in | B． | broke up | C． | broke out | D． | broke down |
Hot _______the night air was, we slept deeply because we were so tired after the long journey.
| A．although | B．as | C．while | D．however |
If my car _________more reliable, I would have driven to Lhasa instead of flying last summer.
| A．was | B．had been | C．should be | D．would be |
-I'm sorry for being late. I should have phoned you earlier.
--. I've just arrived.
| A． | That's no trouble | B． | You are welcome |
| C． | That's all right | D． | You can never tell |