Past Simple.
1) I went to the hospital last week. 2) My brother visited his friend yesterday. 3) I didn't go to school today. 4) She cooked a tasty cake for us. 5) I thought you would go there.
Present Perfect.
1) I have visited a doctor this week. 2) My brother has already come. 3) I haven't still forgotten about your advise. 4) She has already cooked a cake and we can eat it. 5) I have done all my housework.
Present Continues.
1) I am writting to you now. 2) My brother is watching TV in the living room. 3) I am not sitting, I'm standing! 4) She is cooking a cake at the kitchen. 5) I'm listening to music now.
Present Simple.
1) I visit a doctor twice a week. 2) My brother goes to drink beer every Friday. 3) I don't go to school on Saturday. 4) She always cooks tasty things for us. 5) I listen to music everywhere.