Whatever is left over may be put into the refrigerator，________ it will keep for two or three weeks.(2011·安徽)

Jack______ books in the library at 4 pm yesterday afternoon.

Mr. Jiang, as ______ elderly man, took part in the Special Games for ____ elderly, and finished _______ second in the race.

When I heard the bad news, I couldn’t help ________ .

u ______ theidea of living a low-carbon life—It sounds tough, butit is a tendency.