--- Lily, whose backpack is this? --- I think it _____ be Peter’s. Look! His name is on it.
It's hot in Guangzhou but it's _______ in Heilongjiang.
—How's the weather there?—It's _______.
My brother often ____ TV in the evening.He's ____ TV now.
Listen!A boy ______ an English song.
—How is the weather today?—It's ____.