Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.
| A．are to challenge | B．may be challenged |
| C．have been challenged | D．are challenging |
Steven has a lot of work to _______ in the office since he has been away for quite a few days.
| A．take up | B．make up | C．work out | D．carry out |
To my surprise, the manager ______ 30 dollars from my salary without any good reason.
| A．cut off | B．held up | C．brought down | D．kept back |
The mother often tells her son to be a good boy, warning him to ______ trouble.
| A．hold back from | B．keep out of |
| C．break away from | D．get rid of |
I can ______ some noise while I’m studying, but I can’t stand very loud noise.
| A．put up with | B．get rid of |
| C．have effect on | D．keep away from |
John has put on so much weight recently that his mother has to ______ all his trousers to his measure.
| A．let out | B．give away | C．bring in | D．make up |