Here is so difficult a problem_______none of us can solve.
| A．which |
| B．that |
| C．as |
| D．what |
Right now the writer and managerbusy preparing for the following meeting.
| A．is |
| B．are |
| C．was |
| D．were |
You may borrow the book, you do not lend it to anyone else.
| A．in good condition |
| B．on condition that |
| C．in no condition to |
| D．in condition |
The discovery of new evidence led to .
| A．the thief having caught |
| B．catch the thief |
| C．the thief being caught |
| D．the thief to be caught |
When for his views about his teaching job, Philip said he found it very interesting and rewarding.
| A．asking |
| B．asked |
| C．having asked |
| D．to be asked |
He tries towriting in his spare time, but he has to drop the plan because he is too busy.
| A．take down |
| B．take over |
| C．take up |
| D．take off |