Which underlined part is different from the others in pronunciation

While he has got high marks in the college entrance examination, he thinks that it is ______________ satisfactory.

tember of 2016, the G20 summit will be held in Hangzhou, ________ theme is to stress innovation, reform and development.

Have you finished your work _____—Yes, I have. I’ve always finished it.

If you go to Xi’an, you will find the palaces there more magnificent than commonly ______.