Раскройте скобки, употребляя глаголы в present perfect, past simpl или present perfect continuous

Oh no! The children have been cooking. Look at the state of this kitchen! How many times has Wendy been late for work this week? I’m going to give that cat some food. It has been sitting on the doorstep for hours. I’m sure it’s starving. I have been doing grammar exercises all morning. I deserve a treat for lunch. Haven't you bought your mother a present? That’s really mean of you. She worked in Australia for 2 years. Then she moved. Now where are my keys? This is the third time I have lost them today