He has a friend _______ father is a doctor.
#43070
A
who
B
whom
C
whose
D
which
推荐题目
I have a friend _______ is training for the Olympics.  
#43066
A
who
B
whose   
C
what   
D
where
Is this the reason ______ at the meeting for his carelessness in his work?
#43072
A
he explained
B
what he explained
C
how he explained
D
why he explained