The computer looks old, but it _________ just half a year ago.
| A．has been bought | B．was bought | C．is bought | D．will be bought |
I’ve worked with children before,so I know what _________ in my new job.
| A．expected | B．to expect |
| C．to be expecting | D．expects |
They _________ the habit of visiting old friends,_________ I think is great.
| A．keep on;which | B．keep up;which |
| C．keep on;as | D．keep up;as |
This is the main use that the scientists make _________ of natural resources.
| A．it | B．which | C．use | D．/ |
Fire safety in family houses,_______ most fire deaths occur,is different to achieve.
| A．where | B．which | C．to which | D．from what |
She looks forward every spring to _________ the flower-lined garden.
| A．visit | B．paying visit | C．walk in | D．walking in |