this is the third time _____ you re late for school.

this is the third time _____ you re late for school.
A.in which
B.that
C.which
D.on which
这个定语从句为什么不能用引导词which?

B 前面是序数词the third 定语从句中这种情况下后面必须用that.
再问： 谢谢你，亲，回答的很及时，又长知识了。