A. to sound B. to be sounded C. sounding D. to have sounded
分析：答案选 A。表示“想要做某事”want后只能接to do，排除选项C;sound like中sound是系动词， 属不及物动词，不能用于被动语态，排除选项B;sound 发生在want后，故不用完成式，排除选项D。
2. “Is Bob still performing?” “I’m afraid not. He is said _____ the stage already as he has become an official.”
A. to have left B. to leave C. to have been left D. to be left
分析：答案选 A。因he与leave是主动关系，不用被动式，排除选项C和D;由already可知，要用完成式。