Some scientists think that it may take _________years to make robots look like people, and do the same things as us.A. hundreds of B. two hundreds of C. two hundreds
—Your classroom is very clean. —Sure.It________after school every day.
—He’s never stolen anything before,________he? —________.It’s his second time to be taken to the police station.
The window________by some kids who were playing ball.
—Do you love reading Guo Jingming’s novels? —Of course I do,but I________them for a long time because I’m always busy.
We________several meetings to discuss the plan of volunteers in the community since last week.