The plane from Beijing to Hong Kong ________ half an hour ago.
My keys are in my bag. keys under that desk aren’t mine.
A lot of small towns in Nanchong are definitely worth_____.
We can see a river running to the east ____ the hill. [ ]
We’ll be back for our school’s ____anniversary ceremony(周年校庆).—I see. That means you’ll have a get-together with your classmates in_______ years.