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21. The salesman said that thief was a young man with _______brown hair. A. the, a B. the, 不填 C. a, 不填 D. a , a 22. — Who should be sent there, Alice or Mary? — . More people than needed have arrived there. A. Neither B. None C. Either D. Both 23. Although he was disabled, he tried to lead as possible. A. as normal a life B. so normal a life C. as a normal l