---I have been to Qingdao before.----- .
The flight to Guangzhou had to be________because of the heavy snow.
—Ann isn’t going out this evening,is she? —________.She has to stay at home to finish her task.
.—Please let me know when you come up with a good________. —Don’t worry.I will.
—Do you know________woman in red? —Yes,she’s a professor of________university.
Please remind me _______ to my teacher .