For _______information about present national boundaries, we’d better refer to an up-to-date map.
| A．practical | B．frequent | C．reliable | D．beneficial |
It will take a lot of time and_____ to finish the task on time.
| A．power | B．pressure | C．struggle | D．energy |
We’ll have our picnic in the place _____ most of us like best.
| A．where | B．which | C．who | D．as |
My house _____ when you visited Beijing last time, so I didn’t invite you to my home.
| A．was being decorated | B．is being decorated |
| C．has been decorated | D．was decorated |
She had to drop out of school _____ her family couldn’t afford the cost of her education.
| A．although | B．unless | C．because | D．so |
The old man has retired from the factory. He _____ there for 30 years.
| A．works | B．worked | C．has worked | D．was working |