问题补充：
His hobby is watching TV playing the piano．It’s reading books．
A. either；or
B. both；and
C. neither；nor
D. not only；but also
答案：
A. either；or
B. both；and
(答案→)C. neither；nor
D. not only；but also
解析：either；or要么……要么；both；and两者都；neither；nor 既不……也不……；not only；but also不但……而且。句意：他的爱好既不是看电视也不是弹钢琴。是读书。结合语境可知选C。
