1.They have been looking for their cat since morning.
2. Her son has been playing computer games since childhood.
3. We have been cleaning our flat all day long.
4. Jessica has been talking on the phone since early morning.
5. I have been writing this verse for five minutes.
6. Bob and Pamela have been packing their suitcases since six o'clock.
7. Has been she studying Hebrew since last spring?
8. You have been playing football since you were fifteen years old.
9. Have been they watching this show for two hours?
10. The bonfire hasn't been burning all night.
Объяснение: