——What’s that noise?
——Oh, I forgot to tell you. The new machine ______.
| A．was tested | B．will be tested | C．is being tested | D．has been tested |
The Parkers bought a new house but ______ will need a lot of work before they can move in.
| A．they |
| B．it |
| C．one |
| D．which |
It used to be thought _____ the Earth was flat.
| A．as |
| B．when |
| C．since |
| D．that |
He made _____ known to his friends that he didn’t want to enter politics.
| A．that |
| B．it |
| C．himself |
| D．him |
Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.
| A．it |
| B．that |
| C．one |
| D．which |
I’d appreciate ____ if you would like to teach me how to use the computer.
| A．that |
| B．it |
| C．this |
| D．you |