Some scientists think that it may take ______ years to make robots look like people, and do the same things as us.
---How do you study English? --- _____ watching English movies.
My brother has ___ come here, but my sister hasn’t ____.
—I have many books to read these days. —Me, too.
—Dad, can I go out? —Yes, but please be careful not to play on the street when there are too many cars.
—Let’s go to the cinema. —No, I want to watch TV rather than see a film.