Question

【题目】His parents found ________ to tell him everything that had happened.
A.it necessary
B.that necessary
C.it is necessary
D.necessary

Answer 1

【答案】A
【解析】考查人称代词，句意：他的父母发现有必要告诉他所发生的一切事情。it在此处做形式宾语，真正的宾语是其后面的动词不定式。故A项符合。B that不能做形式宾语，C it做形式主语，D必要的。