Помогите пожалуйста Past or Past Perfect Tense Simple:15) What ______you

Помогите пожалуйста Past or Past Perfect Tense Simple:


15) What ______you _______(do) when I _______(call) you last night?
16) John ________(push) his friend into the pool when he ________(get) him mad.
17) The kid ________(bump) into a tree while he ______________(run).
18) As soon as I ___________(hear) that my neighbour ___________(have) an accident, I _________(phone) him.
19) Where _______ you ________(visit) last summer?
20) I can still remember her wedding day! She ______________(wear) a beatiful weddng dress, music ____________(play) softly, everybody ______________(dance) and __________(have) so much fun...
21) My daughter _______ just ______(go) bed when I ____________(bring) her a glass of milk last night.
22) What ________(be) the students excuse when she _______(be) late this morning?
23) When my friend _______(stop) by to see me, I _______________(not/expect) them.
24) Tamara _______(go) to hospital to visit her uncle three days ago.
25) Sally ______________(set) the table while she ___________(talk) on the phone.
26) First, Helen _________(get) a promotion.Then, she __________(buy) a new luxurious house.
27) While I ___________(paint) the wall, I _________(drop) the brush.