21.The company wanted a manager with ______ knowledge of English and ______ work experience.
A./;/ B.a;/ C.the; a D.the; the
22.Two candidates are _______ the president of General Motors.
A.running for B.running around C.running after D.running into
23.________ men are greedy, _____ is never peace.
A.There; there B.There; where
C.Where; there D.Where; where