题目内容
19. There were two boys in the lab, ______did the experiment successfully.
A. the clever of whom
B. the cleverer or whom
C. the clever of them
D. the more clever of them
B
解析:
选B。“the + 形容词比较级+of+名词复数”表示“两者中较…的一个”;此处关系代词whom指代the two boys.
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