Past Perfect and Past Simple

After they ... (see) the Tower, they ... (go) to Westminster Abbey.

He ... (ask) me which animals I ... (see) in Africa.

After Columbus ... (discover) America, he ... (return) to Spain.

After he ... (work) very hard, he ... (fall) ill.

Find the action that happened first:

She opened the box after she had found the key.

Find the action that happened second:

Before they ... (start) the party, they ... (invite) some friends.

They ... (go) for a sightseeing tour after the bus ... (arrive).

My sister had eaten all the chocolate before my parents come home.

The movie had started before we reached the theatre.

(Here, the movie started earlier and then we reached the theatre. Therefore, we`ve used Past Perfect for the movie starting and Past Simple for reaching the theatre.)

After the man ... (come) home, he ... (feed) the cat.

I ...(be) very tired because I ... (study) too much.

When she ... (arrive), the match already ... (start).