Use PAST SIMPLE or PAST PERFECT to complete the sentencesWhen I

Use PAST SIMPLE or PAST PERFECT to complete the sentences

When I (get)__________to the party, it(already start)___________raining.

I (just finish)___________writing my essay, when Laura (phone) _________.

Jason (open)_______the window. A white sheet of snow (cover)__________the ground.

Sue gave me a call to say they (not buy)_________the necessary sportswear yet.

Lucy (not can)______________remember the fact her friend (mention)__________the day before.

When I (meet)_____Fohn, I (understand)______ that I (see)_______him before.

When the second group of tourist(arrive)_______in London, the first group (already leave)____.