题目内容
Over time,__________custom of kissing developed as_______way for adults to express their love for each other.
A.a; the B.a; a C.the; the D.the; a
D
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题目内容
Over time,__________custom of kissing developed as_______way for adults to express their love for each other.
A.a; the B.a; a C.the; the D.the; a
D