请教专四的语法题

请教专四的语法题
1.Land belongs to the city; there is ___ thing as private ownership of land.
A.no such a B.not such C.not such any D.no such
2.The flats I have looked at so far were too expensive.So I'm better off ___ where I am.
A.stay B.staying C.to stay D.stayed
3.My son walked ten miles today.We never guessed that he could walk ___ far.
A./ B.such C.that D.as
4.If talks for the new trade agreements take ___,food industries in both countries will be seriously affected.
A.much too long B.too much longer C.too much long D.much long
5.It is not so much the language ___ the legal jargons that makes the book difficult to understand.
A.but B.nor C.as D.like
答案分别是：DBCAC