We can see monuments here and there. Those who have made great ________to human beings and society will never be forgotten.
| A．advance | B．effort |
| C．contributions | D．achievements |
—Where on earth have they gone? —I have no idea, but I wish I .
| A．know | B．knew | C．would know | D．would have known |
“Well done, John! Not a single mistake _______ in your exam paper this time!” said the teacher．
| A．you made | B．did you make | C．had you made | D．have you made |
This machine __________ It has worked for years.
| A．didn’t work |
B．wasn’t working |
C．doesn’t work |
D．isn’t working |
When they moved to Canada, the children ______ to the change very well.
| A．adopted | B．adapted | C．accustomed | D．suited |
Busy as they are, parents should ______ at least two hours every week to spend with their children.
| A．set out | B．set away | C．set off | D．set aside |