21．—I am going to be a volunteer at the Asian Games to be held in Guangzhou this November．
—___! Me, too．
A．That's it B．Congratulations C．No problem D．That's great
22．Because ____ unemployment is very high at present, it's not easy for a fresh graduate to find ____ satisfying job as he wishes．
A．the; / B．/; a C．an; a D．an; the
23．Following the girl, we went into a hall, on ____ walls hung a few pictures of some famous scientists．
A．its B．which C．whose D．those
24．—Those scientists invented a robot to care for kids!
—It's not surprising．They ____ wonders all the time．
A．worked B．were working C．work D．have been working
25．—Quite a lot of students failed in the math exam．
—Exactly．It is ____ their abilities．
A．within B．over C．against D．beyond
