1.A man called JOHN left a message for you.同义句
A man __who___ __is___ __called___ john left a message for you.
2.I love the singer who writes his own music.对who writes his own music 提问
_Which___ __singer___ _do___ you love?
3.The match began 5 minutes ago.同义句
The match __has___ ___been___ on ____for__ 5 minutes.