A wild Siberian tiger has been caught on camera in Heilongjiang Province, __________ the first images of this sort were captured．
A． which B． when C． where D． that
Words failed me when I heard the news of the New Year‘s Eve stampede in Shanghai． But for lacking a sense of safety, so many people __________ killed or injured．
A． couldn‘t be B． wouldn‘t have been
C． mustn‘t have been D． shouldn‘t be
Our nation should first develop modern law __________ in ruling the country by law．
A． awareness B． opportunities
C． regulation D． principle
__________ on Wechat is a common phenomenon, and more people hardly write letters．
A． Communicate B． Communicated
C． To communicate D． Communicating
People are __________ shoppers in China on November 11th, contributing to more than 35 billion online shopping sales．
A． potential B． enthusiastic
C． intelligent D． temporary
— Didn‘t you talk any with Rice?
—No, the plane __________ off when I rushed to the airport to see her off．
A． was taking B． had taken
C． took D． has taken
