Which is your teacher?
The one with thick glasses over his eyes is.
3
哪个是你老师?
眼睛上戴着厚厚眼镜的人就是.
这句话结构为：
The one (主语）.is (my teacher).
the one后面部分应为定语.
动词原形,第三人称单数都不能直接做定语,所以排除124.
选3,介词短语做定语.