Nie Haisheng’s dream _____ an astronaut _____ at last.

The thousand-year-old temples have survived modernization and centuries of wind and rain, and the original buildings __________ now.

You had better ____ some money for your daughter.

We can see people dancing there.

He ____be in the classroom, I think.—No, he_____ be in the classroom. I saw him go home a minute ago.