It is said that the number of doctors invited to the meeting _____100, but a number of them _____ absent for different reasons.

In my opinion, some of the news  _____  unbelievable.

— 　　　 you or your sister fond of music? — Neither she nor I 　　　.

— Why does the lake smell terrible?— Because large quantities of water ____.

 Only one of the answers _______ right .Either he or I________ right.