21．—What’s ________ matter with you
—I have ________ toothache.
A．a； the B．the； / C．/； a D．the； a
22．The song I Believe I Can Fly tells us that believing in ________ is very important.
23．—Hurry up. It’s almost time for school.
—Don’t worry. We are sure to be at school________．
A．at times B．on time
C．all the time D．by the time
24．The running water makes the stones ________ very smooth.
A．sound B．taste C．smell D．feel
25．________I am in trouble, my classmates will help me out.
26．—Song Joong-ki is a movie star in Asia now.
—That’s true. He was once an excellent skater but had to ________ skating because of an accident.
A．give up B．go on C．take up
27．—Mum, I’m tired of doing too much homework every day.
—Oh, dear, without hard work, you can’t ________ your dream.
28．It is not easy for young children to ________ difficult problems by themselves.
A．care about B．deal with
C．decide on D．worry about
29．(易错题) Our parents always try to do what they can ________ us to have a good learning condition.
C．helps D．to help