Mother often tells Tom ______ too much time playing video games.

A．not to spend

B．to not spend

C．don’t spend

D．doesn’t spend

商鞅变法的意义深远，下列哪一项不是商鞅变法的意义

A．推动封建社会制度的形成

B．秦国通过变法渐渐富强起来

C．推动了商业的发展

D．为秦国后来统一全国奠定了基础