That is my favourite incorrect answer ever! 18% of respondents agree with me upon it
Can you imagine a class consisting of endless grammar exercises? I can! And I can even tell you what the purpose of such classes is. Imagine you have been studying present simple for a while. It’s time you moved on to learning the continuous forms. However, you still make one and the same mistake: “he go”. According to the programme of your course, you are already finishing with the continuous, but in fact you come to every class and do one and the same thing. You continually repeat “he goes” in different tasks.
Surely, such a class is far from ideal. On the other hand, the question is what is better – to forget about this first-person-singular thing and move on to Present Continuous, or to stick to Simple until it is “automated” in your mind.
