Our country are working even harder now to _______ the gap between the developed countries and ours.

Great changes have taken place in Cangnan. We’re sure Cangnan will be even_____ tomorrow.

I was very______ for him because he helped me out of trouble.

 In today’s fast changing and competitive world, to be able to learn faster and more effectively is not merely desirable; it is ________.

He’s never lost a day’s work through illness. He’s as _____ as old boots.