A. discharged B. disguised C. disturbed D. discouraged

　　27.The teacher said that the classroom was empty __________ a few chairs.

　　A. but for B. except for C. apart from D. besides

　　28.This is the hotel __________ I like to stay.

　　A. in which B. at which C. to which D. at that

　　29.The child took a spoonful and tasted it carefully __________ it was hot.

　　A. in case B. provided C. if D. unless

　　30.__________ impossible to make a living in real estate, Nancy added insurance as a side line.

　　A. It’s being B. Its being C. It is D. It being