一·你可以试着把从句改成陈述句,which用the替换,句1-1的从句就可改为the ship broke in pieces during the time,如果木有time就不通了啊
二·介词必须放在关系词前是用来指代时间啊地点啊之类的,day就是时间。而其它的两者皆可。其实句3-2也可以这么表达This is the small house in which I used to live不是吗
三·可以的句4-1中where指的是the top of the temple这样一个方位。when也可以。比如they met each other 10 years ago ,since when they have been good friends.