Răspuns:
1. I have been eating a sandwich.
Have you been eating a sandwich?
I haven't been eating a sandwich.
2. You have been playing computer games.
Have you been playing computer games?
You haven't been playing computer games.
3. He has been drinking coffee.
Has he been drinking coffee?
He hasn't been drinking coffee.
4. She has been riding the bike.
Has she been riding the bike?
She hasn't been riding the bike.
Explicație: