1 . The house ________ (paint) white when I was there. (所给词的适当形式填空)

2 . Every year in September or October, the Mid­Autumn Festival ________ (celebrate) by the Chinese people all over the world.(所给词的适当形式填空)

3 . I still remember the day ________I first visited the Great Wall.

A．which

B．that

C．where

D．when

4 . It is worthwhile________ (discuss) the problem. （用所给词的适当形式填空）

5 . The reason _________ the injection needs repeating every year is that the virus changes.

A．what

B．when

C．why

D．which

6 . On Sundays there were a lot of children playing in the park, ________ parents sat together joking.

A．their

B．whose

C．which

D．that

7 . —I prefer shutting myself in and listening to music all day on Sundays.
—That’s ______ I don’t agree. You should have a more active life.

A．where

B．how

C．when

D．what

8 . Wind power is an ancient source of energy ________ we may return in the near future.

A．on which

B．from which

C．by which

D．to which

9 . Is this the reason ________ at the meeting for his carelessness in his work?

A．he explained

B．what he explained

C．how he explained

D．why he explained.

10 . It is what you do rather than what you say __________ matters.

A．that	B．what
C．which	D．this