it was+形容詞后面為什么能接for引導(dǎo)的從句?
新概念第二冊93課的第7題（選擇題）
原題如下：
A site had to be found for it.it was necessary____for it
(a)a site to be found (b)for to be found a site
(c)for a site to be found (d)to be found a site
我自已選的答案是a,后來核對發(fā)現(xiàn)c才是正確答案.