1. Dmitry hasn't come from school yet.
2. I haven't finished my homework yet.
3. My brother hasn't made any mistakes.
4. We haven't watched any television today.
1. Have you visited the Akorda in Astana?
2. Have you been to Astana?
3. Has Colin ate the Kazakh meet?
4. Has Colin written to his mother?
5. Have you ever seen a whale in the sea?