You look absent﹣minded. you (expect) someone?
Yes. My e﹣friend is coming over. We've never seen each other before.
It t us 90 minutes from Tongren to Guiyang by high speed train.
My uncle is a c ,he woks in a restaurant.
You will not succeed (除非) you work hard.
The old man lives (独自地), but he doesn't feel lonely.
It's our duty to (保护) the environment.