_____ the city’s public school system should be open to the children of migrant workers has become the focus of discussion.
—Did you find the missing couple in the mountain yesterday? —No, but we ________ to get in touch with them ever since.
—Such a mistake could have been avoided. —Unfortunately, he _______ the mistake again and again.
—May I remind you that a Mr. Wang is waiting outside, sir? —Oh, that’s right. I about it.
—Did you enjoy your holiday? —Yes, it’s the best holiday I these years.
Just look at the room. My roommate ____ up his clothes.