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Ouradviceofdispatchwasfaxedtoyouthreedaysagoandyouitbynow.A.willreceiveB.receivedC.musthavereceivedD.havebeenreceived请问为什么选C呢?

题目详情
Our advice of dispatch was faxed to you three days ago and you _ it by now.
A.will receive B.received C.must have received D.have been received
请问为什么选C呢?
▼优质解答
答案和解析
我们的货运建议,在三天前就传真给你了,(所以)你现在肯定已经收到了.
must-肯定,已经-have +过去分词,且是主动