Here are the sentences with the verbs completed:
Was my sister singing last night at the party?I remember we were playing volleyball at the beach.Have you and Sammy had breakfast this morning?My mom made a delicious dinner last night at home.They were looking for her keys yesterday at lunchtime.Yes, I swam at the club this morning.Was Keith reading in his room last night?No, he was doing his math homework.I tried to sleep last night, but the neighbors were having a very loud party.Did you have a very loud party?