Nowadays, sending e-mails to each other has become a way _____ what they think to others.

Jack, together with his sisters,_____ great interest in writing these days. 

Mary and I _________ friends.

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

Such poets as Shakespeare _____ widely read, of whose works, however, some _____ difficult to understand.