問題詳情

3. To make their homestay a pleasant experience, students have to follow certain rulesof ____________.
(A) extinction
(B) etiquette
(C) import
(D) income

參考答案

答案：B
難度：困難0.358209
統計：A(40),B(48),C(15),D(10),E(0)

用户評論

【Jessie Ye】評論

extinction消滅etiquette禮儀