Our duty is to ______ their country against both domestic and foreign enemies’ attack.

Mr. Smith __________ the accident，but his wife died and he __________ her by five years.

I am always delighted when I receive an e­mail from you.________the party on July 1st，I shall be pleased to attend.                                              (2013·江苏，26)

 Thanks to the Party’s opening and reform policy, people in China are _____ than they were thirty years ago .

Working hard in study is important, but_______ as important is the desire to learn.