请大伙帮我解释一下这几题为什么选这个答案!

请大伙帮我解释一下这几题为什么选这个答案!
103.what is ( )ordered the english book?
A the lady's address in beijing who
B the lady's address in beijing which
C the address of the lady in beijing who
D the address of the lady in beijing which
104.there comes a time in every man's life ( )
A then he has to think
B which he needs
C when he has to think
D therefore he has to work hard
109.this is the shop ( )i often buy foodstuff.
A where
B which
C of which
D to which
110.the reason ( )he gave for his being late was unacceptable.
A why
B that
C who
D for which
112.those guilty of a serious crime ( )refuse to reform must be severely punished.
A which
B whom
C when
D who
113.yet no firm evidence had come to light ( )the men arrested were actually responsible.
A which
B as
C what
D that
比如103,为什么选C,不选A?特别是109,是介词提前么?