Надо! (употребить глаголы либо в past perfect либо в past perfect continious) 1.leonard was exhausted because he (work) in his lab all night. 2.patty (already/leave) the party when jim arrived. 3.she wanted to come with us but she (not/finish) her project. 4.they (live) in london for ten years before they moved to paris.
Leonard was exhausted because he had been working in his lab all night.
Patty had already left the party when Jim arrived.
She wanted to come with us but she had not finished her project.
They had been living in London for ten years before they moved to Paris.