Past simple: Give the correct from of the verbs

past simple : Give the correct from of the verbs

1 I...........................my Maths homework yesterday (to do )
2......................... the CN Tower when you .................. in toronto ? ( you / to visit - to stay)
3 They ................................ a fram two week ago ( to visit )
4 Jenny and Beggy ............ their borther ( not ? to help) 

5 the children ...........................at home last weekend ( not ? to be )

6 When ...............................you ........................... this wonderful skirt ? ( to desgn)