The plan for the new design occurred to Mr. Smith______on his work recently.
| A．while concentrated | B．while concentrating |
| C．while he concentrated | D．while concentrating himself |
If you have trouble in communicating with others, it's bound __________ your study.
| A．to affecting |
| B．affecting |
| C．in affecting |
| D．to affect |
The factory now employs __________.
| A．sixty staff of members |
| B．sixty members of staff |
| C．sixty staff |
| D．sixty staff members |
Just like her father, she has a talent __________ art.
| A．with |
| B．at |
| C．for |
| D．of |
As is known __________ us，the actress is famous __________ her excellent performance.
| A．for； as |
| B．to； for |
| C．as； for |
| D．to； as |
—Why do you look worried?—There are so many problems __________.
| A．remaining to settle |
| B．remained settling |
| C．remaining to be settled |
| D．remained to be settled |