We can see _____ and _____ in  Australia.

 ---What’s the matter?---Something is wrong with my _______. I can’t see clearly.

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

— You look so healthy!— Yeah, I like eating apples. An apple a day keeps the _______ away.

My father lost ____keys. Now he can’t get into the house, the office or the garage (车库).