A:at; from; to
B:in; from; to
C:on; from; at
D:on; from; to
入射光线和平面镜的夹角为60度,转动平面镜、使入射角减小15度,反射光线与入射光线间的夹角和原来相比较将( )
There a house standing on the top of the mountain.
A: Did you p____ football last Sunday?
B:Yes, we did.