Jack is 1.8 meters tall and he is boy in our class. A. tallB. tallerC. tallestD. the talle

问题补充：

Jack is 1.8 meters tall and he is boy in our class.

A. tall

B. taller

C. tallest

D. the tallest

答案：

A. tall

B. taller

C. tallest

(答案→)D. the tallest

解析：根据题干和选择项的提示可知，此句的含义是Jack是班最高的一个因为是三者之间的相互比较，故用最高级，tall的最高级是the tallest，故选D