3) a) Have you visited the Akorda in Astana?
b) Have you been to Astana?
c) Has Colin eaten the Kazakh meet?
d) Has Colin written to his mother?
e) Have you ever seen a whale in the sea?
4)a) Have you ever been to the USA?
No, I have never been to the USA.
b) No, I haven't finished my homework yet.
c) Omar has just arrived to Almaty.