当颌位记录时下颌前伸，在戴牙时，全口义齿前牙表现为

A．反
B．对刃
C．深覆盖
D．深覆
E．正常覆盖覆

In April, thousands of holidaymakers remained       abroad due to the volcanic ash cloud.

A．sticking

B．stuck

C．to be stuck

D．to have stuck