________energy,turn off the hot water after you take a shower.
I have dreamed of ______________all over the world in the future.
Guangdong is _________the southeast of China.
My parents want to go ______ on vacation.
—My brother and I will go to the library tomorrow.— . Shall we go together?
—Mr. Wang’s never been to Canada, has he?— . He went there on business last week.