---Why you are so worried? --- I ___for my little son all the afternoon, I don’t know why he hasn’t come back so late.
He is always helping people without expecting anything ______.
I will mark ______ everything you say.It is helpful to the English learners.
—Believe me,all your efforts will ______ some day. —Thanks for your encouragement.
Some blood types are quite common,others are regionally______,and still others are rare everywhere.
Don't be ______ by products promising to make you lose weight quickly.