emergency的名词

1.Ihave(改borrowed--）keptthebookfortwoweeksandIhavetoreturnit.

borrow是瞬间完成的动作，不能用twoweeks形容，如果用borrow的话，就像楼上说的，fortwoweeks应该改为twoweeksago

2.pleaseshowmethebookyoubought(去掉it)yesterday.

定语前置，it指代thebook，前面已经有了，后面不需要代词

3.Thebook（改wrote--）writtenbytheauthorispopularwiththeteen-agers.

书是被写的，用被动written

4.Doyouthink（加that)itismoredifficultforwomentogetjobinhighpositions?

that引导从句

5.Themostimportantthingtokeepinmindwhendealingwith(加an)emergencyistostaycalm.

emergency是可数名词，前面要加冠词