English Verb Form Exercises

The starting page of my app shows the different English verb form exercises the user can choose from. There are 4 exercises altogether each with 15 - 24 questions. By clicking on one of the exercises, the user gets to the corresponding multiple choice page. The user can enter the user-name, but that is not necessary to complete the given test. There are 2 - 3 options after each question and the user should choose the correct answers. After checking the one the user thinks is correct, there is a Click to Check button at the end of each test which shows the scores the user got and the whole corrected test so that the user can easily see and find where they went wrong.