Ответ:
1. US scientists are examining Mars rocks and are trying to find signs of life.
2. Grandmother is still working in the supermarket, but is thinking of retiring.
3. Man who is living in a tree house is trying to set new one-year record.
4. New York man is building own rocket and is planning to reach the moon.
5. Tokyo woman is celebrating 120th birthday and is looking forward to 121th.
Надеюсь, помогла.