市场的劳动供给曲线
参考答案：是将市场中所有个人的劳动供给曲线相加而得到的，即把每一工资水平下，每个人期望的小时数相加。
Have you ever listened to the song Yesterday once more, _____ singer died in her early years? [ ]
A. its
B. it's
C. whose
D. which
