Sally is ________ American girl. She plays __________ violin very well.
— Shuofang Airport, please. I have to be there by 7:00.— _________, but I'll do my best.
I don’t doubt _________.
—Is your uncle in his _________?— Yes. His _________ birthday is coming next month.
A few students don’t know ________ they should deal with stress before________ an exam.
—How much difficulty did you have this problem? — .