there are many differences in personality, they have a lot common.A. While; inB. Although;

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(答案→)A. While; in
B. Although; on
C. In spite of; in
D. Thanks to; on
解析：本题易误选C。in spite of 为介词短语，后接名词、代词或短语，不能接句子，而本句第一个空后是句子形式，需填连词， while用作连词，其中一层意思为“虽然；尽管”; have…in mon为固定短语，意思为“有共同之处”。