題目：The train leaves ____ 6: 00 p. m. So I have to be at the station ____ 5:40 p. m. at the latest.
2020-02-26
A. at; until B. for; after C. at; by D. before; around
正確答案：C
試題解析：
A. at; until B. for; after C. at; by D. before; around
正確答案：C
試題解析：
