Past Simple or Present Perfect The scientist (to write/ already) his

Past Simple or Present Perfect The scientist (to write/ already) his article. Andrews hamster (to eat / just) his food. The boys (to find / yesterday) an old cage in their garden. They (not / discuss / yet) the problem. Charles (to finish / just) his translation. They (go) to the theatre last week. My cousin (be) to the theatre three times this week. His niece just (write) the invitation letters. Helen (come) home, (have) a short rest, and then (begin) to help her mother. . your relatives (take part) in the demonstration yesterday. . your parents (tell) you about the project today. Yesterday my aunt (go) shopping and (buy) apples for a cake. Dont buy pizza! I already (make) an apple pie. Lets have breakfast! I (set) just the table. My mother is angry. My elder brother (not / take out) rubbish. What plants you (water) so far? I (visit) my uncle and aunt last Saturday?