問題詳情
39. ___________ a proper dining etiquette to wait to eat until everyone has been served some food.
(A) It is
(B) That is
(C) What is
(D) Which is
參考答案
答案：A
難度：簡單0.724762
統計：A(761),B(180),C(69),D(40),E(0)
用户評論
【Angel】評論
回1FIt is (adj) to V-r是「虛主詞」句型