Why not ______ the old women They need us.

_____ to his work, the scientist didn’t get married all his life.

, the world’slargest mobile phone maker, said that over the first nine months of the year it_____ 23 million handsets in China, an increase of 77 percent _____ the sameperiod a year ago

I’d like to stay longer, I’m too busy.

really _____ useful dictionary, ______dictionary every one of us needs．