Complete the sentences with either the past simple or past perfect of the verbs in brackets.
I ________(send) a message to my friends before I ________ (meet) them.
They ________(not have) much fun by the time Lauren ________(arrive).
He ________(call) her four times before she ________(answer) the phone.
Jason ________(find) a new job when he ________(go) to London.
After we ________(pay) we ________(leave) the restaurant.