1.Friends,we will graduate from middle school .We shouldn't forget the day ______we spent with classmates
A that B when
选A
这是一句定语从句,先行词是【the day 】,在句中作宾语
we spent 【the day 】with classmates
所以只能选that
when是先行词在句中作状语的情况
2.We still remember the time _____we had the English corner
A that B when C which
选B
先行词为【the time】
在从句中做状语
we had the English corner 【at the time】
所以引导词用when
2.When they finally _______,the concert had benn on for 15 minutes.
A reach B arrive
选A
reach后面直接可以加地点
而arrive后面必须加上介词后才能加宾语的