He had little idea that it was getting so late, ___________ ?

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

 —      does it take you to watch TV?—About forty minutes.

——Bill had nothing for breakfast this morning ,       ?.——    , he got up too late.

— I wonder ________ you’ll water this kind of flower. ——Every other day.