we have classes from Monday to Friday in a week 是in还是for 我今天就要知道 老师说的!

问题描述:

we have classes from Monday to Friday in a week 是in还是for 我今天就要知道 老师说的!
并写出为什么

for
for用来指定时间等.
如:在(指定时间)
The meeting is arranged for 9 o'clock.
会议安排在九点钟.
希望有帮助!