1. I __(phone) you last night, but you (not answer). 2. They __ (not skate) this time yesterday.3 . What ___ (do) this time last Friday? 4 . My mum (prepare) lunch while my brother and I __ (do) the homework.5. I ___ (have) a shower, when someone___ (knock) on the door.6I __(study) while my little sister ___ (play)