2. should I check it?
3. we would have to walk
4. we don't have to decide
B. 1. we should choose
2. you might think
3.can’t be
4. we don't have to do
C. 1. we couldn’t find
2. we took it unnecessarily
3. I should have asked
D.1. would you like to walk
2. we shouldn't do this
3. we will have to get used to it
4.It shouldn’t be
Niestety nie wiem na jakim jesteś poziomie i jakich zwrotów, słów itd. używasz.