21. Outside my office window there is a fire ____ on the right.
A. escape ? B. ladder ? C. steps ? D. stairs
22. I ____with the Browns during my stay in New York City.
A. put in ? B. put down ? C. put on ? D. put up
23. Operations which left patients ____ and in need of long periods of discovery time now leave them feeling relaxed and comfortable.
A. exhausted ? B. unhealthy ? C. upset ? D. fearful
24. Farmers are allowed to grow small gardens of their own and they sell their vegetables ____ the black market.
A. on ? B. at ? C. in ? D. for
25. The electric fan does not work because of the ____of service.
A. pause ? B. break ? C. interruption ? D. breakdown