The Yangko Dance is ________ traditional Chinese folk dance created by the farmers．（　　）

A．aB．anC．theD．/

Work hard， _______ you'll have a big success．（　　）

A．orB．butC．andD．yet

We should protect the earth because it is ______ home．（　　）

A．weB．usC．ourD．ours

Please give me some ______ on how to spend the coming weekend．（　　）

A．spaceB．adviceC．praiseD．courage

______ do you plan to buy？

I haven't made up my mind． I'll just look around．（　　）

A．whoB．HowC．whyD．What