Readers are required to _________ the rules of thelibrary and mind their manners.

Of all the subjects, chemistryseems to be for me.

Oh, my roommate always made a mess of our living room.— . He promised to clean everything off late.

What do you think we can do for our aged parents?—You___do anything except to be with them and be yourself.

I want to relax myself right now. Would you pleasechange to _____music?