Сколько есть поставьте следующие предложения вопросительную и отрицательную форму 1) i to boston yet ( not be ) 2)kate and jess a nice cat recently (buy) 3) recently my friend and i an ufo (see)

1) Have I been to Boston yet?
2) Have Kate and Jess bought a nice cat recently?
3) Have my friend and I recently seen a UFO?
1) I have not been to Boston yet.
2) Kate and Jess haven't bought a nice cat recently.
3) My friend and I haven't seen an UFO recently.