Нужно раскрыть скобки употребляя глаголы present perfect,present continuous, present simple и past simple. 13. it (to be) dark in the street now. the sun already (to sit). 14. whey you (to hear) the news? - i (to hear) them last saturday. 15. what you (to do) now? - i (to write) a letter to my friend. - when you (to receive) his letter? - i (to re¬ceive) it today. 16. your son already (to do) your lessons? - yes, he just (to finish) doing them and now he (to watch) tv. 17. it (to rain) now? - no, it (to stop) raining an hour ago and now the sun (to shine). 18. she (to learn) the new words and now she (to translate) the text. 19. your child already (to get) a passport? - yes, he (to get) it two days ago. 20. it (to be) time to go. you (to finish) your work?