Am I right? (Please, check some phrases.)

[Piko]

1. We are looking forward (to see | to seeing) you.
2. How long have you (known | been knowing) your teacher?
3. How long have you (had | been having) your car?
4. I wouldn't like (to go | going) on a package holiday.
5. Don't bother (going | to go) to the art gallery.
6. She isn't here. She ('s gone | is going) to the supermarket.
7. John's (been | gone) to the station. He'll be back in a few minutes.
8. How many books (have | had) you written by the time you were retired?
9. I (used to go | went) to my sister's wedding last year.
10. What (did you do | were you doing | have you been doing) at 6 o'clock yesterday?
11. A reporter interviewed the group while they (were | have been) getting ready for the gig.
12. After leaving school he (has studied | studied) history at the University of Oxford.

[Beeesneees]

Hello Piko,

Welcome to the forums. Excellent work! those are all correct.
_________________
Cheers m' dears!

[Piko]