请选择DCBA/|3M1u:\.Z7r:CThe conference __________ a full week by the time it ends.-^;a+N0e0l/K5F/r/S3@
A. must have lasted-^;a+N0e0l/K5F/r/S3@
B.will have lasted-^;a+N0e0l/K5F/r/S3@
C.would last-^;a+N0e0l/K5F/r/S3@
D.has lasted-^;a+N0e0l/K5F/r/S3@