—I don’t know ____ .
—Because he has to look after his mother.
| A．why he is leaving | B．why is he leaving |
| C．when he is leaving | D．when is he leaving |
---- ________does Nancy usually go to a buddy club?
---- Once a week.
| A．How often | B．How long |
| C．How far | D．How much |
Those boys _________ English at the English corner now.
| A．practise speaking | B．practicing spoken |
| C．are practising speaking | D．are practicing to speak |
----What do you think of the weather in Nanjing?
----It’s warmer than________ in Beijing.
| A．it | B．one | C．that | D．those |
China is one of________ in the world.
| A．the oldest country | B．the oldest countries |
| C．much older country | D．much older countries |
Funny jokes can always make us _____ when we are sad.
| A．laughing | B．laugh |
| C．laughed | D．laughs |