Bonsoir,
1: They had been living in America since their father died.
2: I saw them last Tuesday.
3: Spring begins on March 21st.
4: The actors are rehearsing now. They rehearse every morning.
5: We are going to the pictures tonight.
6: They learnt Spanish at school.
7: Look! The neighbours have bought a new car.
8: I have forgotten my keys.
9: They just went out.
10: He has been speaking for more than two hours.
11: You are reading this book at the moment ?
12: Jean has traveled all over the world.
13: She heard about it ?
14: He was sleeping when the phone rang.
15: I have never seen Big Ben.
16: He has hidden his brother in the cupboard.
Voilà, bonne soirée!