--- 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.
——will you stay in Tongliao for your summer vacation? —— For about two weeks.
—— Mom, what do you think of our new house? —— It’s nice, and it’sthan the old one.
She is tiredher job, so she’s alwaysa bad mood.
Do you think orange car can reach that speed inhour?
SichuanfoodishotterthanShanghainesefood.That's______________.