He knows it is high time that he ________ at once.
| A．quits smoking | B．quitted smoking |
| C．should quit to smoke | D．quitted to smoke |
Before you quit your job，__________ how your family would feel about your decision.
| A．consider |
| B．considering |
| C．to consider |
| D．considered |
Close the door of fear behind you, and you __________ the door of faith open before you.
| A．saw |
| B．have seen |
| C．will see |
| D．are seeing |
Every day __________ a proverb aloud several times until you have it memorized.
| A．read |
| B．reading |
| C．to read |
| D．reads |
If __________ to look after luggage for someone else, inform the police at once.
| A．asked |
| B．to ask |
| C．asking |
| D．having asked |
Read this story，__________ you will realize that not everything can be bought with money.
| A．or |
| B．and |
| C．but |
| D．so |