Linda is fifteen ____. She is in Class 1, Grade 9.
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.
—I think her dress comes from the 1970s. —It_________ be from that time. It looks so modern on her.