1 we are living in an age------many things are done on compu

1 we are living in an age______many things are done on computer.
A which B that C whose D when
2 the house,_______ was destroyed in the terrible fire,has been repaired.
A the roof of which B which roof C its roof D the roof
3 the matter ______ you were arguing about last night has been settled.
A that B what C why D for which
4 who ____ has common sense will do such a thing?
A which B who C whom D that
5 he often helps the students _____ he thinks are not quick at their studies.
A whom B who C when D because
6 Don't talk about such thing of _____ you are not sure.
A which B what C as D those
7 the freezing point is the temperature _____ water changes into ice .
A at which B on that C in which D of what
8 i'll tell you ____ he told me last week .
A all which B that C all that D which
9 who can think of a situation _____ this idiom can be used?
A which B that C where D in that
10 i like the second football match _____was held last week.
A which B who C that D不填
（请每道题目给出分析过程）
另外,请指教在定语从句中,of which ,for which ,to which ,at which ,on that ,all which ,all that .等都是怎么用的.