Choose the best anwser

47. I______ up late al night.

A. use to stay B. am used to stay       C. used to staying        D. am used to staying

48. The blind child _____ a great effort to learn "Braille".

A. did              B. got              C. made           D. created

49. There was a lot of ___________ from the local residents.

A. oppose        B opposite       C. opponent     D. opposition

50. I'd like to introduce you to Mrs. Thuy,_____ is the teacher of this special class.

A. that             B. which          C who D. whom