________twice a year,whether it is a car or a bus or a truck,is the rule that every driver must obey in this city.
A.Examining |
B.Examined |
C.Being examined |
D.Having been examined |
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________twice a year,whether it is a car or a bus or a truck,is the rule that every driver must obey in this city.
A.Examining |
B.Examined |
C.Being examined |
D.Having been examined |