---_____ did your uncle leave his hometown?
---He ________ for nearly twenty years.
| A．When; has left | B．When; has been away |
| C．How long; has left | D．How long; has been away |
When you don’t know a word，you can________in the dictionary．
| A．look it up |
| B．set it up |
| C．give it up |
| D．pick it up |
—We have done a lot to make our city cleaner，but it’s still not enough．
—So we should do________to improve it．
| A．less |
| B．higher |
| C．later |
| D．more |
________Gian________Tara are studying Chinese history and culture now．They find them rich and amazing．
| A．Both；and |
| B．Not only；but also |
| C．Either；or |
| D．Neither；nor |
—Do you know________Amy came to school this morning？
—Her bike was broken，so she had to walk．
| A．why |
| B．how |
| C．when |
| D．where |
My friend Frank sings well，and he is________good at playing the guitar．
| A．not |
| B．also |
| C．yet |
| D．too |