1) I sat in armchair and drank tea when he entered( Past Simple, прошлое время). 2) Did you went to the store?(Past Simple, прошлое время). 3) We left home to the moment him return(Past S.) 4)Look! He is running so fast( Present Continious, настоящее время) 5) If Elena had read the book, she would have known what she was talking about.(Past Simple)