TASK DEFINITION: Given a sentence, generate a new sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.
PROBLEM: agers must feed their pets .

SOLUTION: People must feed their youths .

PROBLEM: You would eat ice cream because you are depressed.

SOLUTION: You would change ice cream because you are depressed .

PROBLEM: If you avoid to wash your clothes then you should get some laundry detergent .

SOLUTION:
If you want to wash your clothes then you should get some laundry detergent.