Thechairlooksratherhard,butinfact,itisverycomfortableto...

问题详情：

The chair looks rather hard, but in fact, it is very comfortable to ________.

A．sit                               B．sit on

C．be sat                            D．be sat on

【回答】

B　后一分句为：sth.＋be＋形容词＋to do句型，sit是不及物动词，后加介词on后构成不定式短语，主语it是介词on的逻辑宾语。

知识点：动词

题型：选择题