53. The teachers are doing what they _____ their stuaits.

A. can to teach B. can teach C. can teaching D. can to teaching

52. They were _____ inventors than pure scientists.

A. more B. less C. many D. worse

51. Old as the car is, _____ it works quite well.

A. but B. yet C. so D. however

50. The stubborn boy didn't _____ so that he missed the chance.

A. take advice B. follow an advice C. give some advice D. ask for advice

49. You'd better make a mark _____ you have any questions.

A. at which B. at where C. the place D. where

48. I like ______ of the two stories, for this story is _____ than that one.

A. both; not more interesting B. neither; no more interesting

C. neither; not more interesting D. either; no more interesting

47. Our English teacher _____ by the teachers and students.

A. is good thought of B. is thought high of C. is sung highly praise for D. is spoken highly of

46. Only a fool enjoys _____ in public.

A. making fun of B. to make fun of C. being made fan of D. to be made fan of

45. _____ at the news that I didn't know what to say to comfort her.

A. So sad she looked B. So sad did she look C. So sadly she looked D. So sadly did she look

44. Tom was so angry with Bob that he hit _____.

A. Bob in the head B. Bob's head C. Bob on the head D. on Bob's head