The _____ you work at it, the _____ progress(进步) you will make.
| A．more; hardly |
| B．harder; more |
| C．hardlier; greater |
| D．harder; greatest |
Millie is quiet and modest and easy________________.
| A．to work | B．work with |
| C．to work with | D．to work with her |
She has finished typing but she doesn’t know _______ next.
| A．what to do | B．how to do |
| C．what should she do | D．how she should do |
The kind teacher devoted all her time ___________ her students.
| A．help | B．to help | C．helping | D．to helping |
— It’s dangerous to walk across the street carelessly.
— You’re right. We can’t be careful while crossing the street.
| A．so | B．very | C．too | D．more |
It’s quite clever ________ you _______ out the problem.
| A．for； working | B．for； to work |
| C．of； working | D．of； to work |