- Some students often drop litter carelessly in our school. What can we do?- We can _______ some signs to remind them not to do that again.

Zhang Yimou is not in China. He has gone            . 

We always _____ after school.

Lily        eat lots of desserts after supper last year, so she was very fat then.

–Nancy, how long does it take you to fly to Canada? –Sorry, I don’t know. But I can telephone my father to _____ it for me.