—_________T-shirt do you like better, the red one or the blue one?—I prefer the red one.

— _______ are they doing?一They are running．

 --Does he have to eat fruits every day? -- Yes,         .

—Do you know the boy?—_______. He’s Bob’s brother, Bill.

 ---Will your father take the train to work next year? ---          . He will take the subway.