Do you know the reason __ he was late?
#77149
A
of which
B
for that
C
for which
D
of that
推荐题目
She came back with her two friends,        . 
#78137
A
neither of them are doctors
B
neither of them is a doctor
C
neither of whom are doctors
D
neither of whom is a doctor
The school ______ my sister studies at is far from here. 
#76351
A
where
B
that
C
at which
D
in which