问题补充:
—Is Bob still performing?
—Im 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
答案:
(答案→)A. to have left
B. to leave
C. to have been left
D. to be left
解析:在“sb/sth is/was+过去分词+不定式”句型中,如果不定式所表示的动作在谓语动词前面发生,动词不定式要用完成式。