21. The two sisters are ______ different in character --- one talks a lot while the other is a girl of few words.
A. entirely B. exactly C. frequently D. finally
22. Carol said the work would be done by October, ______ personally I doubt very much.
A. it B. that C. when D. which
23. Mrs. Black was happy that she began to get the _______of all her hard work finally.
A. prizes B. rewards C. results D. awards
