--- Listen! David is talking happily with his mother in the next room. --- It ______ be his mother. She has gone to Yunnan to be a volunteer doctor.
—Ann asked me to remind you of the meeting this afternoon. Don’t forget it!—OK, I .
—Do you know Wugong Mountain is the first one in our province.—Yes, it’s famous for its grassland on the top.
Mike said that the video tapes on the table belonged to .
Please ________ the meat and I want to make some dumplings.
Be quiet, please. I can’t _______ the guide.