The cat has been sleeping since the morning... They’ ve been dancing for half an hour.... My mum has been working as a nurse for five years... Mike has been repairing the car.. Mike has
Trang 7The cat has been sleeping since the morning
Trang 8They’ ve been dancing for half an hour.
Trang 9My mum has been working as a nurse for five
years.
Trang 13Mike has been repairing the car Mike has just repaired the car