Before Tom left home, his mother kept telling him to ________ his manners at the party.

 “Theory is something, but practice is ___” said he.

She got into a(n) _____when she thought she'd forgotten doing homework. 

—He was downloading reading materials from a website when the computer crashed.—_______ that he looked a little upset.

Thanks to the modern electrical_____, housework nowadays has been made easier and easier.