Правильно ли я сделала?

Девочки, помогайте, запуталась я с временами совсем, проверьте, правильно ли я сделала:

Задание: Поставьте глаголы, данные в скобках, во времена групп Perfect или Perfect Continuous.

1. I want to study journalism to be a reporter – a newspaperman. I (think) about it a lot lately.

Я поставила I have thought

2. Before I made an important decision on which college to go I (discuss) it with my parents

Я поставила had been discussing

3. By midnight the astronomers (watch) the lunar eclipse for two hours

Я поставила has been watching

4. The Stewarts are going to the theatre tonight. Richard (make) a reservation for theatre tickets.

Я поставила had made