Past simple vs past perfect simple 7 - tutto inglese - Imparare l'inglese gratis on line

He (revise) the manuscript before he (submit) it to the publisher.
She (clean) the garage before her parents (visit).
They (donate) their old clothes before they (move) to the new house.
I (calculate) the expenses before I (submit) the budget.
He (install) the software before the training session (begin).
She (pack) her suitcase before the taxi (arrive).
They (landscape) the garden before the wedding (take) place.
I (document) all findings before the research paper was (publish).
He (modify) the engine before the race (start).
She (lock) all the doors before the alarm (be) set.