A
1- are
2- aren't
3- is
4- isn't
5- is
6- isn't
8- aren't
9- are
10- am
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B-
1- were
2- was
3- wasn't
4- weren't
5- was
6- were
7- wasn't
8- weren't
///////
C-
1- No, Robert and sally aren't good at same kind of art
2-Yes, Sally is an artist
3-Yes Robert is good sculpting things from clay
4-No Robert isn't good at painting
5-No, Robert,sally and their cousin aren't from canada
6- Yes, Amelia was sick for a long time
7- No,Amelia wasn't able to get out of bed
8-Yes, Amelia and Sally were sad when Sally showed her picture
