The old man had one son and two daughters, treated him well, made him very sad.
He, along with his sister, ______ how serious the situation is.
—These things are not useful to anyone, are they? —______. We can throw them away.
—My sister took a photo with Jay Chou last year. —______.
Our English teacher suggested we ________ English as much as possible in class.
Remember to introduce your friend Stone to me when he arrives, ______?