“Well done, John.！ Not a single mistake _____ in your exam paper this time！”said the teacher.

Why do you call him Mr．Knowledgeable?— Because he knows almost everythingwe want to know．

Many countries,America, Japan, Brazil and Spain want to host the 2016 Olympic Games. [ ]

Ann is a careful girl．She always goes over her exercises to ____ here are no mistakes．

Why don’t you ask him for help? You _____ be good friends.— We have disagreements and we haven’t talked to each other for a long time.