Betty's never seen a three-D movies, ?
---Where is Peter? --- He ___________ dinner for his parents at home.
________you don’t give up, your dreams will one day come true.
Look at the heavy rain! Nobody knows when the plane will _____ and when it will land.
Yutu, China’s first moon rover(月球车), ________ at the center of attention since it flew to space last December.
---What’s the world’s ______ national park? --- It’s Yellowstone National Park in the US.