If you want to be healthier, you shouldn't do _____ in the classroom all the        time but do more _____ on the playground. 

We usually take a shower in the _________.

Many countries are using natural gas , wind and other forms of ________ .

—Do you have two_________? —Yes , I do.

— How can I get more information about their company?—You can visit their _____ at www. asdfg.com.