You have to come here__eight o'clockA in B by C on

问题描述:

You have to come here__eight o'clock
A in B by C on

B

选B 到。。。时间截止
翻译为 8点之前你必须到

如果说8点到
要用at
上面没有
所以选B
by=截止……时间
也就是说8点之前你必须到

选B,by eight o'clock是“八点前”的意思。