---Are Mr. and Mrs. Wang living alone in the house?
---Yes, they have three sons, but ______ of them live in their own houses.
| A．neither ???? | B．both | C．all | D．none |
__________ good advice the teacher gave me!
| A．How | B．What a | C．What | D．How a |
The traffic was busy on our way to the train station, _____ we caught the train on time at last.
| A．although | B．so | C．but | D．because |
Listen! Can you hear them _______ in the next room?
| A．practising to sing | B．practising singing |
| C．practise singing | D．to practise sing |
If Nancy __________ the exam, she will go to the USA for English study.
| A．passes | B．past | C．pass | D．pasts |
The fruit should be well ______ during summer
| A．kept | B．keeping | C．keep | D．to keep |