-- Perhaps Tom's not in.
-- ________. Look, the light's on.
| A．Yes, he can be at home | B．No, he mustn't go out |
| C．Yes, he must be at home | D．No, he needn't go out |
_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
Please tell me the way you thought of _______ the garden.
| A．take care of | B．to take care of |
| C．taking care of | D．to take care |
Do you have any difficulty ________?
| A．on listening | B．to listening |
| C．for listening | D．in listening |
They lived a hard life and were often made _______ for over ten hours a day.
| A．work | B．to work | C．to working | D．worked |
The policeman warned the drive ________ so carelessly.
| A．never to drive | B．to never drive |
| C．to not drive | D．doesn’t drive |