10.
1. Have you played
2.have you been
3.have you studied
4.have you heard
11.
0.I have known my bestfriend for 4 years.
1.My favourite sport is football and I have been playing it for 3 years
2.I am in english class and I have been in it for 2 years long
3.I have been studying english for 7 years
4.The most interesting thing I have heard today is that my cat had kittens
