第二部分英语知识运用（共两节，满分45分）
单项填空（共15小题；每小题1分,满分15分）
从 A、B、C、D 四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
—Would you mind if I sat here?
— Sorry. _____ I'm expecting a friend.
A. Of course not. B. I'd rather you didn't C. Go ahead. D. Why not?
A bank is the place __________ they lend you an umbrella in fair weather and ask for it back when it begins to rain.
| A．when | B．that |
| C．where | D．there |
Whatever is left over may be put into the refrigerator，__________ it will keep for two or three weeks.
| A．when | B．which |
| C．where | D．while |
Mary was much kinder to Jack than she was to the others，__________，of course, made all the others upset.
| A．who | B．which |
| C．what | D．that |
The children，__________ had played the whole day long, were worn out.
| A．all of what | B．all of which |
| C．all of them | D．all of whom |
He wrote a letter __________ he explained what had happened in the accident.
| A．what | B．which |
| C．where | D．how |