Peter is of the three boys but he’s than the other two.A. the tallest youngerB. taller

问题补充：

Peter is of the three boys, but he’s than the other two.

A. the tallest, younger

B. taller, older

C. tallest, younger

D. tall, oldest

答案：

(答案→)A. the tallest, younger

B. taller, older

C. tallest, younger

D. tall, oldest

解析：句意：彼得是三个男孩中个子最高的，但他比其他两个都年龄小。由of the three boys可知用最高级，由than可知用比较级，结合连词but可知选A。