Careful study shows that the best athletes win____,_____they think then can win.

With the word“PM2．5"_____ appearing in media reports，people pay greater attention to it and seek health tips for smoggy days．

— Lovely weather, isn’t it?— Yes, a bit hot, ______ ．

The boy was＿＿＿＿＿＿eager to get a geography book. 

The director added a few characters and changed some names in this movie but _______ this is a true story.