問題詳情
21. ____ and blurred, it is extremely difficult to recover his sight.
(A) A person’s eyes become damaged
(B) Once a person’s eyes become damaged
(C) In case of a person’s eyes become damaged
(D) That a person’s eyes become damaged
參考答案
答案：B
難度：適中0.65
書單：沒有書單，新增