—What do you think makes a good doctor?
—As doctors, they can’t be ________ careful. They must have perfect medical skills.
| A．so | B．very | C．quite | D．too |
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 |
The car accident happened ______ a cold winter morning.
| A．in | B．on | C．at | D．of |