2 . 他会改变主意很正常。
________________ he should change his mind.

3 . It's a pity that he ________a lie.
他竟然撒谎，真是遗憾。

4 . 完成句子
①_________________________ she has made such a mistake.
她犯了这样一个错误，真是遗憾。
②It seems that _________________________.
似乎他们赢得了比赛。
③_________________________ at least 20 buildings were damaged or destroyed.
据信，至少有二十座楼房遭到破坏或彻底毁掉。
④It is suggested _________________________.
有人建议会议延期召开。
⑤_________________________ three people were killed in the accident and five were hurt badly.
据报道，事故中三人丧生，五人重伤。
⑥_________________________ Taiwan is an inseparable part of China.
众所周知，台湾是中国不可分割的一部分。