高中英语的几个句子改写和语法填空
1.原句:Mr.Smithgaveupsmokingquitealongtimeago.Heishealthnow.
改写:Mr.Smithisingoodhealthnowfor____________quitealongtimesincehe______________.
2.填适当词语:Youmadethesamemistakeforthesecondtime,dropping________"n"intheword"government".
3.Canyouexplainhow_____cameaboutthatyoumissedthemorningclasses?
(PS:这里的cameabout希望能解释下)
额.以上几题希望有具体的解释,特别是2.3题的翻译--我没看懂他的意思.