题干
—I ordered a pair of shoes online two days ago and they haven’t arrived yet.
—Don’t worry. You_______ have them by Friday.
—Don’t worry. You_______ have them by Friday.
A：could
B：shall
C：must
D：may
答案(点此获取答案解析）
B
，曲线
及
轴所围图形的面积为 （ ）
