1.A
固定句型sb be said to have done sth = It be said (that) sb have done sth,意思是“某人据说已经做了某事/据说某人已经做了某事”.
之所以用不定式的完成形式to have done sth,是因为该动作已经发生了.
即：Robert is said to have studied abroad = It is said (that) Robert has studied abroad.
2.B
固定结构“使役动词make + 宾语 ourselves + 宾语补足语 heard”.
此结构需要考查宾语和宾语补足语动词的关系,才能确定宾语补足语动词的形式.
此题句意明显是“使我们自己被(别人)听见”,即ourselves和hear之间是被动关系,所以用过去分词hear.
A项错在hear后面缺少宾语；C项错在us和hear；D错在hear.
3.C
固定短语：chief engineer 总工程师
4.C
固定短语：miss doing sth 差一点做某事
而该句主语the parrot和catch之间是被动关系,所以上述短语必须变化成：miss being done 差一点被...