选出划线部分读音与其余三个不同的选项。
— What were you and your sister doing when the telephone rang?— I while my sister was eating.
— Do you have any problems _______ your English?— No, I don’t. But I have some maths problems _______.
--- Sorry, Frank. I’m busy today. I can’t go swimming with you. --- ______ .
--- I can hardly believe such a little boy gets up ______ 5:00 ______ 6:00 every morning.--- What a hard-working boy!
--- I’d like to buy a new house in the center of the city for rent at this special moment.--- Oh. I never doubt ______ it is worth ______ to buy new houses.