Before Chinese Chang’e-2, the US sent up a space probe (探测器) to hit the moon to see ______.
They must have been enjoying themselves there, or they _____ so long.
_____ and you will break the world record.
— Where did you live as a child? —— A village _____ by hills on three sides.
Nowhere else, as Tim said, _____ except to the small garden in the backyard after school.
Someday, we are sure to understand the most important things are _____ that can’t always be bought with money.