Which of the following underlined parts is different in pronunciation from others

__energy, we turn off the lights for EarthHour on the last Saturday in March

There a house standing on the top of the mountain.

_______ do you think of the basketball match— It’s perfect. It’s more exciting than _______ matchthat I have ever watched.

known to all that the US is about the same size as China, whereas its population is five times________.