Jack, who claimed everything clearly, however, he told a lie.
A. to have heard
B. to hear
C. having heard
D. hearing
网友回答
(答案→)A. to have heard
B. to hear
C. having heard
D. hearing
解析：考查不定式的完成式：句意：宣称清楚的听见一切的杰克却撒谎了。Claim后面接不定式做宾语，因为在宣称之前，他已经听见了，用不定式的完成式表示先于句子的谓语发生，选A。