Choose the correct option to complete the sentences

1. Bobby's clothes are so dirty! What
   [has he done|has he been doing] all day?

2. How long
   [have you known|have they been knowing] Charlie?

3. A: Oh, this is my favourite film!
   B: How many times [have you watched|have you been watching] it?

4. I
   [have learned|have been learning] to drive for three years. Now I'm quite confident on the road.

5. I
   ['ve practised|'ve been practising] to play that song for hours because I'm planning to take part in a concert.

6. You are so lucky! You
   ['ve been visiting|'ve visited] so many countries already!

7. A: Liza, I'm really sorry, I'm late.

   B: Don't worry. I [haven't waited|haven't been waiting] more than 5 minutes.

8. A: Where have you been?

   B: We [have played|have been playing] chess with dad for an hour.

9. I'm nervous because I
   [have never been playing|have never played] lawn tennis.

10. A: I'm hungry.

    B: Mom [hasn't finished|hasn't been finishing] the dinner, so we have to wait.