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: You would testify to a doctor because you want a checkup .

SOLUTION: You would retreat to a doctor because you want a checkup .

PROBLEM: If you want to take a course then you should go to school.

SOLUTION: If you want to take a course then you should recommend to school .

PROBLEM: Bad credit would make you opt to pay cash .

SOLUTION:
Bad credit would make you expect to pay cash .