“ To be frank, some people don't support this way. ”句中的不定式分句的逻辑主语是主句的主语“some people”
C.
“A German taxi-driver, Franz Bussman, recently found a brother who was thought to have been killed twenty years before.”句中to have been killed表示该动作发生在found之前,并且与其逻辑主语a brother之间是被动关系
D.
“The best way to break down mutual distrust and misunderstanding will be for both sides to walk in each other's shoes.”句中的不定式分句的逻辑主语是主句的主语“ both sides”