21. However wealthy you are, it can’t _______ a healthy body.
A. compare B. suit C. defeat D. match
22. Was it on a lonely island _______ he was saved one month after the boat went down?
A. where B. that C. which D. what
23. If you have problem ______ your composition, you had better ask your teacher for some advice.
A. in B. for C. on D. with
