住双人间的旅游者要求住单人间,如饭店有空房可予以满足,但房费自理
参考答案:对
— _____ is the toy?
— It's on the bed. [ ]
A. Who
B. Where
C. What
D. Whose
任意画一个三角形,它的三个内角之和为( )
A.180°
B.270°
C.360°
D.720°