1. No one would have time to read or listen to an account of everything____going on in the world.
A.it is    B.as is  C. there is  D.what is
2.The professor could hardly find sufficient grounds____his argument in favor of  the new theory.
A. on which to base B.which to base on C.to base on D.to be base on
不太会做啊
第一道题 我选的是B 但是答案是C！如果是C 一个句子中不就有两个动词了吗？后面应该是一个定语从句 我觉得应该用that或as来引导 所以我选了B
第二道题 也是定语从句 个人觉得A B都是对的
英语不好啊 希望各位指点一下啊

第2题只能选A.
B和C其实表达的是同一个意思.
注意区分一下是哪个BASE在哪个上面.
如果想把ON放在后面正确的语序应该是
The professor could hardly find sufficient grounds which to base his argument on in favor of  the new theory.