On the Christmas day, I gave my sister a hat and she offered me a watch .A. in turnB. in r

On the Christmas day, I gave my sister a hat and she offered me a watch .
A. in turn
B. in return
C. by turn
D. by return

A. in turn(答案→)B. in returnC. by turnD. by return解析：介词词组辨析题。A. in turn 轮流 B. in return 作为回报 C. by turn 逐个D. by return 回复 句意：在圣诞节我给了姐姐一顶帽子最为回报她给了我一块表。根据语境选B

就是这个解释