1) I have been in my room. - b)Where have you been?
2) They have not finished their homework yet. - b) Have they finished their homework? c) Have they finished their homework?
3) Yes, she has. - a) Has Sue kissed Ben?
14) Yes, he has. - a) Has the waiter brought the tea?
15) I have heard the song every day. - a) How often have you heard the song?
17) Caron has read 89 pages. - b) How many pages has Caron read?