Question

1. I … (do not) this exercise before. *
didn`t do
haven`t done
haven’t do
didn`t did
2. We … (go not) to school yesterday. *
didn`t went
didn`t go
haven`t go
haven’t gone

Answer 1

1. haven’t do
2. didn’t go

Answer 2

Ответ:

1)I haven't do

2) didn't go