—I’m leaving now.— ______ you turn off the lights.
– Have you watched the movie the Left Ear? -- Yes, I it last night with my sister.
You go through the security check(安检)before getting on the train.
Air pollution is becoming more and more serious, actions must be taken to stop it.
His opinions are similar yours but different Julia’s.
When Liu Xiang announced that he would running forever, he burst into tears.