Complete the sintences with the simple past of the verbs in parentheses :
1.Chris....(find)a ten dollar bill.
2.The dog.....(follow)us down the road.
3.Those Student.....(work)hard last semester.
4.lucio......(stop)at the corner and....(call)us.
5.I....(try)to talk to helen last night.
6.I.....(pay) the phone bill yesterday.
7.my dad......(catch)a cold when he....(be)in canada.
8.she.......(leave) home early yesterday.
9.they....(know) each other very well when they....(be)kids.
10.the teacher....(bring) the exams corrected.
11.she was cleaning the vase when she....(drop)it.
12.we ......(jog) in the park yesterday.
13.the fire.....(occur) while we....(be)out.