The old couple preferred a flat in a small town to ______ in so large a city as Chongqing．

With the rapid development of the Internet, _______ communication is done by regular mail.

 In that case, there is nothing you can do _______ than wait. 

Surely the day you are informed of your being admitted to a famous key university will be ________ of joy and celebration for your family, relatives and friends.

—Shall I attend my friend's coming­of­age ceremony, Mum?—No, unless you see to ________ that you will be home before 1000 PM.