Do you often help your father ___ the farm work during the summer vacation?
—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.