Если не ошибаюсь Future Perfect Continuous это have will be + окончание -ing
Ответ:
1) I can sing a song for you.
2) You need my help
3) You can go out
4) I coundn't run so fast
5) He can't speak russian
6) We must do it
7) They are finishing
Adelina Sotnikova is a famous Russian figure skater. She was born in Moscow, in nineteen ninety-six. Her great-grandfather, Alexandr Kochetov, is a hero of the Soviet Union.
Adelina began to learn to skate when she was a girl of four.
In two thousand eight she won the Russian Championship. She got ten thousand roubles and spent the money on treatment of her sister.
In two thousand nine she won the Championship again and promised Vladimir Putin to win the Olympics. Five years later she kept her promise.