Past Simpl or Present Perfect. Избрать.1. The scientist (to write/already) his

Past Simpl or Present Perfect. Избрать.
1. The scientist (to write/already) his article.
2. Andrew's hamster (to eat/ just) his food.
3. The boysb(to find / yesterday) an old cage in their garden.
4. They (not/discuss/ yet) the problen.
5. Charles ( to finish /just) his translation.
6. They (go) to the theatte last week.
7. My cousin (be) to the theatre theatre three times this week.
8. His niece just (write) the invitation letters.
9. Helen(come) home, (have) a short rest , and then (begin) to help her mother .
10. ....your relatives (take part) in the demonstration yesterday.
11. ... your parents (tell) you about the project today.
12. Yesterday my aunt (go) shopping and (buy) apples for a cake.
13. Don't buy pizza! I already (make) an apple pie.
15. My mother is andry . My elder brother (not/ take out) rubbish.
14.Let's have breakfast! I (set) just the table.
16. What plants you (water) so far?
17. I (visit) my uncle and aunt last Saturday?