Раскройте скобки в Past Simple или Past Perfect

1)We (to eat) everything by the time he (to arrive)at the party.
2)I (to know) that he (not to learn) the poem.
3)When they (to leave) the beach,the rain already (to start).
4) Arthur (not to know) that we already (to arrive).
5) When I (to come),I (to see) that mother (to cook) dinner.
6)My friend (to study) English before he (to enter) the institute.
7)The car (to go) when (to look) into the street
8)He (to take) the decision before I (to come)

~ОЧЕНЬ СРОЧНО~
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