If you want to get the answer online, that is, the model test or the exercise in it, it can automatically give the answer after the model test or exercise is finished, judge whether you are right or wrong, and maybe estimate your score.

Therefore, if you want to get the answer online, you don't have to look for it yourself. You can automatically generate answers after the exam is over or the questions are finished.

If it is the kind of test paper that has no answer, you can find it on the Internet yourself, that is, you can search for the relevant keywords in the search engine, and you can search for the corresponding exercises or answers to the test paper.

If you answer the question online, you can answer it together with the original question, and then analyze a train of thought of your own question and sum up something.