thank you all that gave a opinion about it. I got it. but I have another one
PRESENT CONTINUOS PASSIVE
HOT DOG’S CARS ARE BEING A SERIOUS HEALTHS PROBLEMS DUE TO SEVERAL KINDS OF ILLENESS.
PRESENT PERFECT PASSIVE
HOT DOG’S CARS HAVE CAUSED SEVERAL ILLENES DUE TO PREPARING THEM.
and I have to give some solutions=) eso fue lo que pense. perdonen mi errores. That's all that I tought , ;0
excuse my english 
I need to do an active voice too=）
WHAT CAN WE DO?
THE BEST WAY TO REDUCE THE ILLNES IS TO CHECK EACH FOOD INN BY THE GOVERMENT