celebrate的名词是____
A. celebratement
B. celebrator
C. celebrating
D. celebration
interviewer的动词是____
A. interviewor
B. interviewing
C. interview
D. interviewee
successful的反义词是____
A. unsuccessor
B. unsuccess
C. unsuccessful
D. unsuccessfully
optimistic的反义词是____
A. pessimistic
B. active
C. sad
D. happy