21. I don’t want to be _______ else. I just want to be ________.

A. anybody , myself     B. somebody , myself    C. everybody , me      D. anybody , me

22. All the students in the classroom do their homework ________.

A. enough careful       B. careful enough       C. carefully enough     D. enough carefully

23. ---You play the piano so well .          do you take piano lessons ?

--- I go to piano lessons twice a week .

A. How long           B. How often           C. How many         D. How much

24. ---What’s wrong with you , Eric? You look tried .

---I          to prepare for the final exam last night .

A. picked up           B. put up               C. looked up          D. stayed up