49. Fire ! Fire ! There are two children _______ danger .

　　 A. at　　 B. with　　 C. of　　 D. in

48. He never borrows it to others , but you can get it _______ paying money .

　 A. in　　 B. to　 C. at　 D. by

47. She is a good teacher . She talks with students in ______ voice .

　 A. gentle　 B. soft　　 C. careful　　 D. mild

46. When I came into the house , my son was　 _______ the difficult math problem .

　 A. labouring at　 B. working　 C. working out　 　D. doing at　

45. The faces of four famous American presidents on Mount Rushmore can be seen from a ______ of 60 miles.

　 A. length　 B. distance　 C. way　　 D. space

44. A ______ cousin of mine has come to see me from a ______ village .

　 A. faraway ; distant　 B. faraway ; faraway　 C. faraway ; far away　 D. distant ; far

43.Did I really hear someone come in or was it only a(an) _______ ?

　 A. imagination　　 B. fantasy　　 C. fancy　　 D. dream

42.He is still hesitating ______ joining the expedition .

　 A. about　 B. of　　 C. in　 D. for

41. I’m living a room ______ south . I like it very much .

　 A. face　　 B. facing　　 C. faced　　 D. faces　　　

40. ----What an amazing film ! It’s the most interesting film I’ve ever seen !

　 ----But I’m afraid it won’t interest _____ .

　 A. somebody　　 B. anybody　　 C. everybody　　 D. nobody