I have offered to work for the store owner one night’s stay.A. in place ofB. in exchange

问题补充：

I have offered to work for the store owner one night’s stay.

A. in place of

B. in exchange for

C. in relation to

D. in preference to

答案：

A. in place of

(答案→)B. in exchange for

C. in relation to

D. in preference to

解析：

句意: 我提出愿意为店主干活, 条件是让我免费住一晚上。in exchange for作为交换……; in place of代替; in relation to关于; in preference to更喜欢;优于。根据句意，只有B符合正确。