Apologizing by email 动名词短语做主语/is 系动词/something (that 或者which) I now totally【 】表语,含省略了that或which的定语从句。发邮件道歉是我现在完全()的事情。可以根据意思选填,例如:完全理解的事情:Apologizing by email is something I now totally【understand】
大概是bothered