Amy is () doctor A.a B.an C.the

Amy is (A) doctor A.a B.an C.the
Chen jie (A) to walk home A.likes B.like C.is
()A.cleaner B.dance C.singer D.driver
照列子,写单词(我不知什么意思）
teach-teacher
work__worker____ dance__dancer___ play__player______ clean__cleaner_____
还有ofter后面加 ing 还是 "原" 还是单词后面加S