Our team is working on a new __________ of safer skateboards.
A. gene
B. generation
C. grade
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There is a/an _______ when all the staff members of the company join in the morning run.
A. hot issue
B. conventional idea
C. unique view
The Mozi Satellite (墨子号卫星) is another success of ___________.
A. human recourse
B. long ranger
C. human effort
Do I have to remember all the __________ to pass the driving test?
A. traffic jam
B. traffic rules
C. traffic signs
看，一些重要人物出现在了机场的红地毯上。
A. Look, some important people appearing on the airport red carpet.
B. Look, some important persons appear on the airport red carpet.
C. Look, some important person appear up on the airport red carpet.
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