1)She has been cooking for 2 hours.
2)She had been cooking until 5.
3)My sister hadn’t been waiting long at the airport when they announced about the delay of her flight.
4)He had been looking for a job for months before he got one.
5)By the time we came home, our mum had been cooking in the kitchen for three hours.
1)She has been cooking for 2 hours.
2)She had been cooking until 5.
3)My sister hadn’t been waiting long at the airport when they announced about the delay of her flight.
4)He had been looking for a job for months before he got one.
5)By the time we came home, our mum had been cooking in the kitchen for three hours.