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----You()partinthepartyintime.----sorryIwasdelayedbytheaccident.A.aresupposedtotakeB.havesupposedtoC.aresupposedtohavetakenD.supposedtotakeHowtochoose?andtellmewhyplease.

题目详情
----You ( )part in the party in time.
----sorry I was delayed by the accident.
A.are supposed to take
B.have supposed to
C.are supposed to have taken
D.supposed to take
How to choose?and tell me why please.
▼优质解答
答案和解析
c 因为迟到的事实已发生