（北京卷27）. Children who are not active or diet is high in fat will gain weight quickly.
| A．what | B．whose | C．which | D．that |
Although this ____ sound like a simple task, great care is needed.
| A．must | B．may | C．shall | D．should |
I used to quarrel a lot with my parents, but now we ______ fine.
| A．look out | B．stay up | C．carry on | D．get along |
In the United States, there is always ____ flow of people to areas of ______ country where more jobs can be found.
| A． | a; the | B． | the; a | C． | the; the | D． | a; a |
There were some chairs left over _____ everyone had sat down.
| A．when | B．until | C．that | D．where |
- Let's go for a walk in the garden.
-, but I need to do the washing-up.
| A． | No, thank you | B． | That's right | C． | Good idea | D． | Not at all |