_____ he is very young, _____ he knows a lot about science.
| A．Because, so | B．Though, but |
| C．When, and | D．Although, / |
—________have you lived in Suqian，Jane？
—For about 16 years．
| A．How many |
| B．How much |
| C．How long |
| D．How often |
I________English for about six years．
| A．learn |
| B．am learning |
| C．have learned |
| D．will learn |
The Smiths have moved away！I really miss them．They________a lot of help to the community for nearly ten years．
| A．offered |
| B．will offer |
| C．are offering |
| D．have offered |
—You speak Chinese very well．________have you learnt，Amy？
—For two years．
| A．How long |
| B．How often |
| C．How soon |
| D．How far |
Mr.Smith has worked in China________two years ago．
| A．in |
| B．for |
| C．since |
| D．until |