Episode: 1x01 After Ms. Morello goes to Africa, Chris is excited to get a black substitute teacher (Orlando Jones), but his enthusiasm quickly turns to dread when the substitute pressures him to get an A. Episode: 4x12 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 Airdate: Feb 12, 2007 A black substitute teacher takes over https://real-directory.com/listings13279151/acerca-de-sst-para-empresa