几道初三英语题目,求助各位~

题目

几道初三英语题目,求助各位~
1、Liu found_____frustrating to watch English movies.
我写的是：it was
应为：it
如果it在这里是做形式宾语,那么frustrating是做宾补吗?可不可以把found后面的那个句子看作是宾从呢?我觉得还可以把这个句子变为：
Liu found (that)it was frustrating……
为什么it was就不行呢?

2、Some people can be easily ____ by small problems and stay angry for a long time.
此处我填annoyed,答案是affected.
annoyed为嘛不行呢?

3、The disabled is so positive that his physical problems are/_____(important)to him.
为什么不能填important呢?

4、To some students studying grammer is boring,but Li feels_____(different).
我填的是different,为什么答案是differently?feel不是系动词么?主系表different是形容词作表语呀?怎么填副词呢?

答案