Make up 6 sentences (2 positive, 2 negative, 2 interrogative) in Present Perfect Continuous.

Positive:

1. She has been studying for hours.

2. They have been playing outside all day.

Negative:

1. He has not been working on the project.

2. We have not been waiting for a long time.

Interrogative:

1. Have you been feeling unwell?

2. Has it been raining since morning?