单选题 As a public relations officer, he is said ______ some very influential people.
A. to know B. to be knowing
C. to have been knowing D. to have known

【正确答案】 A
【答案解析】[解析] 从句子结构我们可以看出,这里的不定式作主语he的补足语。另外,我们还可以看出不定式所表示的动作和主句动作没有严格的时态意义上的差别,因此选择A项。例如:If money is not your servant, it will be your master. The covetous man cannot so properly be said to possess wealth, as that may be said to possess him. 如果金钱不是你的奴仆,它将成为你的主人。一个贪婪的人,与其说他拥有财富,不如说财富拥有他。