In this task, you will be shown a correct English sentence. You need to generate an incorrect form of the input sentence.
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Question: That will never cause the economic problem .

Answer: That will never cause the economic problem .

Question: We know that prescribed burning should be repeated every few years , but it 's very expensive to spend every few years .

Answer: we know that prescribed burning shud be repreated every few years but its very expensive to spent every few year .

Question: As a result , studies in Britain have shown that fluoride increases the activity that can lead to more bone density and therefore less bone fractures among the elderly .

Answer:
As a result , studies in britain have shown that fluoride increases the activity can lead to more bone density and therefore less bone fractures among the elderly .