Duringtheperiodofrecentterroristactivities,people_______nottotouchanyunattendedbag.
A.hadalwaysbeenwarnedB.werealwaysbeingwarned
C.arealwayswarningD.alwayswarned
正确答案:B
Duringtheperiodofrecentterroristactivities,people_______nottotouchanyunattendedbag.
A.hadalwaysbeenwarnedB.werealwaysbeingwarned
C.arealwayswarningD.alwayswarned
正确答案:B