长途旅行之后他们看起来很疲惫。
参考答案：They seemed to be very tired after the long trip.
This_____ my uncle and those _______ my grandparents.
A．is; are
B．are; is
C．are; are
D．is; is
词之起源的传统说法是（）
A.词起源于诗
B.词起源于“曲子词”
C.词起源于民间
D.词起源于酒令艺术
