【2012 贵州遵义】Help others whenever you can_______ you’ll make the world a nicer place to live in.A. or B. and C. but
—Why are they so excited?—They are ________ the football match of the World Cup in South Africa.
—I can’t find the children.Where are they?—They’re not at home at the moment.They ________ in the park.
Mother isn’t ________ a book;she’s ________ TV.
—Maybe you should call him up.—But I don’t want to talk with him ________ the phone.
—Is John playing computer games?—________.