Sam’s been doing his homework since 8: 00, ______ he?A. isn’t B. doesn’t C. hasn’t
The word _____ can be used as an adjective .
—Ann isn’t going out this evening, is she? —________.She has to stay at home to finish her task.
—Why didn’t you go to the cinema with us yesterday evening? —I ________ for my uncle from Beijing at the station.
-----It’s hot. Would you mind my _____ the window? ------ _____.Do it as you like, please!
— Kitty, do you know ______? — Sure, about forty minutes.