Answer :
Answer:
a. I am now swimming for an hour.
b. he has been playing this guitar since he was seven years old.
c. how long are they discussing?
d. she's been collecting dolls for 3 years
e. the office has been using this machine since 1997.
Answer:
a. I am now swimming for an hour.
b. he has been playing this guitar since he was seven years old.
c. how long are they discussing?
d. she's been collecting dolls for 3 years
e. the office has been using this machine since 1997.