. You must be there within an hour. There should be no _______ in sending the information. 

I could tell he was surprised from the ________ on his face. 

Our school has an absolute _______ over others, for we have the most hardworking teachers and students.

What British singer-songwriter Adele worried was ___________ the audience would accept her remained to be seen.

He’s unlucky, and he’s always suffering _____ luck one after another.