幾個關于as的用法（選擇題）回答并給予解釋
1,I walk a long way to my work,_______.
a,as it is b,as you know
c,as seems it d,as it seems
我選擇D,錯了,請寫出正確答案并回答為什么,
2,You may take an oral or writen exam _______you prefer.
a,as far as b,as
c,as against d,in so far as
我選D,又錯了.
3,I dont know _______the others
a,as much as b,as far as
c,according as d,as good as
我選D,又錯了.
4,Morden statesman are often faced with_______problems_______defeated the ancient Romans.
a,the same ...as b,such many...as
c,as...as such d,such...as they