问题补充:
A: When did the Shanghai Expo open?
B: May 1st, .
A. In
B. On
C. At
D. By
答案:
A. In
(答案→)B. On
C. At
D. By
解析:在具体的一天前加介词on,故选B
时间:2022-09-02 08:44:53
A: When did the Shanghai Expo open?
B: May 1st, .
A. In
B. On
C. At
D. By
A. In
(答案→)B. On
C. At
D. By
解析:在具体的一天前加介词on,故选B