Question

We haven't settled the question of ______ it is necessary for him to study abroad.

1. A.
   if
2. B.
   where
3. C.
   whether
4. D.
   that

Answer 1

C
解析：
主要测试宾语从句。首先结合所学知识可知能够和介词搭配的连接词没有if，首先排除；另外结合具体语境可知句子意思为：我们还没有解决对于他是否有必要出国学习的问题。结合语境和答案可知句子_{___} it is necessary for him to study abroad中应该是作出选择的情况。