（换元法）解方程：（x²-3x）²-2（x²-3x）-8=0

设x²-3x=y则原方程可化为y²-2y-8=0

解得：y₁=-2，y₂=4当y=-2时，x²-3x=-2，解得x₁=2，x₂=1

当y=4时，x²-3x=4，解得x₁=4，x₂=-1

∴原方程的根是x₁=2，x₂=1，x₃=4，x₄=-1，

根据以上材料，请解方程：（2x²-3x）²+5（2x²-3x）+4=0．

Millie always does her homework       the evening but she watches TV       Friday evening.

A．on; in

B．at; in

C．in; on

D．in; at