— I don't know______. — Because he has to look after his mother.
| A．why he is leaving | B．why is he leaving |
| C．whether he is leaving | D．whether is he leaving |
---What can I do for you?
--- I’d like_______.
| A．two glass of yogurt |
| B．two glass of yogurts |
| C．two glasses of yougurt |
| D．two glasses of yogurts |
Today, ____ trees are still being cut down somewhere in the world.
| A．much too | B．too much |
| C．many too | D．too many |
I have to study ____ my English test ______ Wednesday morning.
| A．at; on | B．for; in |
| C．for; on | D．on; on |
Thanks a lot for ______ me ______ your party.
| A．invite, for | B．invite, to |
| C．inviting, for | D．inviting, to |
Mr. Li often tells some jokes to make us_______.
| A．lauging | B．to laugh | C．laugh | D．laughed |