患者男性，22岁。4天前劳累后出现右下后牙区胀痛，进食、吞咽时加重。昨日起出现局部自发性跳痛，张口受限，低热，头痛。查体见右下颌角区颊部稍肿胀，无压痛，张口约2.5cm，右侧下颌第三磨牙近中水平阻生，叩诊阴性，无松动，牙龈红肿充血，挤压可见远中盲袋内少量脓液溢出，其颊侧前庭沟丰满、充血，有波动感，压痛明显，咽侧壁稍充血，无压痛。

颊侧肿胀的处理方法应是（）

A.局部热敷

B.拔除患牙

C.牙周治疗

D.开髓扩根管引流

E.切开引流

—Have you heard that Jones, along with her parents, ________to Hainan for the winter vacation?

—Really? No wonder I haven't seen her these days.[ ]

A. had been  

B. have been

C. has gone  

D. have gone