1.
а) Сolin has visited Astana five times.
b) Colin has seen the Duman Centre two times.
c) We have just eaten bananas there.
d) We have been to the cinema there.
2.
a) Dmitry have not come from the school yet.
b) I have not finished my homework yet.
c) My brother has not made any mistakes.
d) We have not watched any television today.