You （） the project by now.

A. are supposed to finish

B. supposed to finish

C. are supposed finishing

D. are supposed to have finished

患者6个月前，上前牙小洞在外院复合树脂充填后一直有冷热疼。近一周疼痛加重，不敢咬合。查：右上中切牙近中舌侧充填体完好，叩诊(++)，扪痛(+)，牙髓无活力。该患者牙的诊断是

A．牙髓坏死

B．急性牙髓炎

C．慢性牙髓炎

D．急性根尖炎

E．可复性牙髓炎