Michael is from America.
–Shall we go hiking this Sunday?--Sorry, I ___. I’ll have to take a piano lesson.
–I hear some students will go on a picnic this weekend.--_____ them will be Jim. I hope you will be one ____ them.
–Zheng Zhou has changed a lot in the past few years.--Yes. You can see a lot of buildings, trees on ___ sides of the streets.
–Who called your sister just now?--I don’t know, but it was a girl’s_____.
—The 2010 World Expo of Shanghai is ___ first time for the world to be hold in developing countries---Yes. All of us want to have ___ second time to hold it.