Раскройте скобки употребляя глаголы в Present Perfect,Present Simple ,Present Continuous , Past Simple,Past Continuous.

18. Where did you learn the news? 19. Have they already thought of everything? Have they bought a lot of food? – Yes, Mark just ordered ten bottles of Coke and four kinds of mineral water. He mentioned peanuts, but he did not order any. He was thinking of tea and fancy cakes. The shop has charged everything to Mark’s credit card. 20. Why are you shivering? – I am shivering because I am cold. 21. I have sprained my ankle again. 22. A world-famous violinist is playing at tonight’s concert. 23. The children were playing with their train set the whole evening yesterday.