you mustn't be silly and drive without wearing a seat belt.什

you mustn't be silly and drive without wearing a seat belt.什 You mustn't is silly. a seat belt 求教you mustn't drive so quickly units which ensures the condition of seat belt and the drive People who don't wear the seat-belt ___ to drive after janua you mustn't drive( )next time ,or there may be an accident. 定语从句 the speed ( ) you drive your car mustn't be too high I can’t be ready for the trip on time and without wearing my 改为祈使句【1】 you mustn't drive a car after drinking you must be a writer,_____ you ? A.mustn't you B didn't you You car _____(stop) if you don't wear seat belt.