We planned ____ the Great Wall. And I expect ____ there earlier .
____I was walking to school, I saw a boy crying in the street.
I hope there will be ____ cars and ____ pollution in the future, thus people will live longer.
—Could you tell me _________? —More than a month.
—Look! All the students are clapping with excitement. How nicely you sing! —_________.
The people in western countries celebrate _________ by making pumpkin lanterns and wearing special costumes with masks.