_____ fire, all safety rules must be kept clear.
| A．In place of | B．Instead of | C．In case of | D．In spite of |
So difficult ______ it to work with him in the same company that I determined to find another job.
| A．I have felt | B．have I felt | C．I did feel | D．did I feel |
Only when you have finished your homework ______ go home.
| A．can you | B．would you | C．you will | D．you can |
It was in the street ______ I live that I met Mr. Green.
| A．that | B．which | C．where | D．when |
A man may usually be known by the books he reads _______ by the friends he keeps.
| A．as well as | B．as if | C．as soon as | D．as usual |
There are so many books! It is not easy for us to decide what to take and what to_______.
| A．take on | B．pick up | C．leave behind | D．work out |