My brother often makes mistakesgrammar. [ ]

Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?

______ young man standing there looks strong and healthy; however, as_________ matter of fact ,he has a serious disease.　　　　　　

What were you doing at this time yesterday? —I ______ on the grass and playing with Tony.

I hope to visit the Summer Palace. — ________. [ ]