twice a year, whether it is a car or a b
题型:选择题
问题:
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
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