找出下列单词中不同类的词,并将其序号填入题前括号内:
(1)A. what B. where C. that D. who
(2)A. policeman B. science C. uncle D. engineer
(3)A. show B. bat C. peel D. cut
(4)A. Ottawa B. Beijing C. England D. Washington
(5)A. tomato B. apple C. lemon D. kiwifruit





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