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

问题补充：

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

答案：

A. in turn

(答案→)B. in return

C. by turn

D. 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