Sure, here are the correct forms of the verbs for the sentences:

1. We (not meet) **did not meet** Tommy last night.
2. I (visit) **have visited** an art gallery recently.
3. Dean (not/sleep) **has not slept** yet. He’s still playing games.
4. After he (arrive) **arrived** home, he (eat) **ate** dinner and (do) **did** homework.
5. I (know) **knew** Mark for 10 years, but then he went abroad and we lost touch.
6. How long (you/know) **have you known** Johnny? I know you see him often.
7. He (work) **has been working** as a strategic advisor at this company for a year.
8. She (travel) **has traveled** to many countries.
9. Jenny (arrive) **has arrived**! Come and say hello!
10. This is the first time I (set up) **have set up** a tent.

Hy vọng những câu trả lời này giúp bạn! <3