Compete the sentences with already, yet or just 1.He hasn039;t bought

Compete the sentences with already, yet or just
1.He hasn't bought tickets........
2.Mike has...... found the tickets office
3.Mike has.... bought the tickets
4.Mike hasn't found the gate..... got abroad the plane.
5. All the passengers have...... got aboard the plane
6. Mike has........ found his gate
7. Mike has........ taken his seat.
8. The plane has....... taken off