Present perfect and Past simple (Free lessons in "ESL Shervin" on YouTube)

I ...................... (never/go) to Thailand but I'd like to go there one day.

My friend is only 22, but he ..................... (already/visit) more than thirty countries.

I ........................... (begin) learning English when I was 6 years old.

My brother ......................... (not/come) to visit me yet.

We ........................ (move) to this apartment in 1999.

He ............................. (always/be) very happy here, so there is no reason to move.

....................... you ever appeared on television?

The plane ............................ (take off) at 8:15, exactly on time.

I .................................... (never/see) anything so stupid in all my life!

My parents ............................. (get married) when they ..................... (be) only 19 years old!

I hope the weather gets better soon, it .................. (be) really terrible this week.

Our son ................... (arrive) in Australia three weeks ago, but he ................. (write) to us yet.