He has a friend who ____ the piano very well .
#42707
A
play
B
playing
C
plays
D
played
推荐题目
I think this is the most interesting thing _____ has happened to us .
#42895
A
that
B
which
C
what
D
who
He has a friend who ____ the piano very well .
I think this is the most interesting thing _____ has happened to us .