แบบฝึกหัด Tense 16 Present Perfect Continuous Tense

1. It has been ….…. since 7 o’clock.
2. He is tried because he ….…....from the flood.
3. They don’t understand because they have not been ….…..
4. Amada has ….…..for 3 hours.
5. She has a headache because she has been .….…..this report since 6 p.m.