---Which is ______, the sun, the moon or the earth? ---Of course the sun is.
Please keep quiet, everybody! I have important to tell you.
---The TV show Dad, Where Are We Going is so wonderful. You shouldn’t miss it.---If I have time, I it.
---May I speak to Mr. Smith? ---Sorry, he . Can I take a message?
Chairman (主席) Xi asks us strict economy (厉行节约) in our daily life.
The American boy is only four years old. He can swim the lake.