Many athletes are clear that the Olympic Games are the only time ________ they will be watched by thousands of millions

He is determined and competent and intelligent as well, which is ________ it takes to become ______success

s the tallest boy in theclass, _______ according to himself.

Are you guys ready for “The Campus Singers Competition”?—Sure！Since we are young, try it, _____ we will regret!

We went to see him off at the airport and soon the plane ___.