The dictionary written by Professor Wang is worthy __.
| A．of buying | B．buying | C．of being bought | D．to buy |
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 office ordered his soldiers ________.
| A．to stand still | B．to not stand still |
| C．not stand still | D．stand still |
The policeman warned the drive ________ so carelessly.
| A．never to drive | B．to never drive |
| C．to not drive | D．doesn’t drive |
When we visited Zhangzhuang again ten years later, we found it changed so much that we could hardly ________ it.
| A．remember | B．think about | C．believe | D．recognize |