Question

17. They
at that company for 30 years. (to work - affirmative form)
18.
he
the race? (to win - interrogative form)
19.1
them at the shopping mall. (to see - affirmative sentence)
20. They
the tickets for tonight's concert.
2. Answer this questions​

Answer 1

They work at that company for 30 years.
Does he win the race?
I see them at the shopping mall

Você esqueceu de colocar o verbo do 20.
Mas se for have:
They have the tickets for tonight’s concert.

Espero ter ajudado :)