The railway______ Qinghai to Tibet is the longest plateau (高原) railway in the world.
| A．connected | B．connects |
| C．connecting | D．is connected |
Don’t throw plastic bags towards the animals in the zoo.
| A．All right. | B．Nothing. |
| C．Not at all. | D．I’m glad. |
---Is that Mr Smith?
---It __________ be him. He is in New York on business these days.
| A．may not | B．needn’t | C．can’t | D．mustn’t |
The boy looked __________ because he didn’t pass his maths test.
| A．sad | B．sadness | C．saddest | D．Sadly |
---When will Uncle Sam come to see us?
---He’ll see us this weekend. He _________ me by email.
| A．told | B．is telling |
| C．will tell | D．is going to tell |
--Why didn’t Peter _________ his homework?
---He said he had lost his workbook. I think it is an excuse.
| A．does | B．doing | C．do | D．Did |