中国政治新常态:English question,Help Help Help Help Help!!!!!!!!!

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____by the local guide,we had a pleasant time in Hangzhou.
A.Being led B.Having led C.To lead D.Led
-Why were you absent from the party?
-I___for a long-distance call from my aunt in Sydney
A.had waited B.was waiting
C.waited D.have been waiting
-Start the machince and begin the job,please.
-___,sir.
A.Right away B.You're welcome
c.All at once D.That's nothing serious
能把语法告诉我最好,我一定追加..............

cda
第一个主语是ing,or to do.
第两个是有for,答案就有have,or has ing
最后一个是日常用语

B. 过去分词短语做状语,表被动.
B.
C