The professor can hardly find sufficient grounds ______ his argument in favor of

游客2023-11-18  21

问题 The professor can hardly find sufficient grounds ______ his argument in favor of the new theory.

选项 A、which to base on
B、on which to base
C、to base on which
D、which to be based on

答案 B

解析 定语从句。这里实际指to base his argument on sufficient grounds。句中使用定语从句的形式,先行词为sufficient grounds,对应的关系代词应该为which或者that,该关系代词在从句中作介词 on的宾语,因此只能用which,不能用that。
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