Раскройте скобки употребляя глаголы в Present Perfect Continuous Active

Светлана в категроии Английский язык, вопрос открыт 02.04.2017 в 08:25

1) Susan (to wait) for Kate for forty minutes. 2) The children (to watch TV) for two hours. 3) My father (to read) newspapers for thirty minutes. 4) Your grandmother (to cook) dinner since 11 o'clock. 5) Your grandmother (to spin) for half an hour? 6) Nick and Pete (not, to play) chess since morning. They (to play) a computer game. 7) Ann (already, to take) a shower for twenty minutes.