B) Make the sentences using Present Perfect: 1) (you/finish) your work, Alice?
2)( I/never/play) this game and I don't know how to do it.
3) (Jensen and Robert /not/be) to Canada, (they / be) to the USA.
4) (Charles/decide) where to spend his winter holidays?
5) (My friend/answer) my question but I would like to know the answer.