The traditional view is ______ we sleep because our brain is “programmed” to make us do so.
| A．when |
| B．why |
| C．whether |
| D．that |
Do you often hear____ your brother?
| A．of | B．from | C．out of | D．about |
Finally they agreed ____ the terms of the contract.
| A．on | B．to | C．with | D．at |
Do you agree____ this plan (arrangement)?
| A．at | B．with | C．on | D．to |
I agree ____ what you said.
| A．to | B．on | C．with | D．at |
He wrote the article ____ three days.
| A．at | B．in | C．on | D．by |