{{B}}pAssAgE two quEstions 29 to 32 ArE BAsED on thE pAssAgE you hAvE just hEArD、{{/B}}

A．BECAusE thEy hAvE A Driving liCEnsE.
BECAusE thEy hAvE rECEivED spECiAl trAining.
C．BECAusE thE trAFFiC ConDitions in lonDon ArE gooD、
D．BECAusE thE trAFFiC systEm oF thE City is not vEry ComplEx.