Among the four teachers of Qiansun Zhaoli, one is a math teacher, one is a Chinese teacher, one is an English teacher, and the other is a PE teacher.

X: Zhao y: Qian z: sun w: Li

1.x！ =A, d (that is, x=B or x=C)

2.y！ =A, C(y=B or y=D)

3.z！ =A, D(z=B or z=C)

4. if x! =C, then w! =A

Problem solving: 123 directly look at w = a.

4 gives x = c.

3 see z = b.

So y=D

So Zhao English, Qian Sports, Sun Yuwen, Li Mathematics

Attention! = means not equal to.