A:did I realize
B:had I realized
C:I realized
D:I would realize
例
uncle
Play tennis
1
aunt
Playing football
2
sister
Playing basketball
3
teacher
Playing ping-pong
4
mother
Playing volleyball
例:My uncle is playing tennis.
如果形如3□□4的四位数能被9整除,那么这样的四位数有( )