In this exercise, you'll see input verbs and model verbs. If you choose ring as your model verb, and then bring as your input verb, bring will conjugate the way that ring normally does. (You will get ...

How would you rate your command of English grammar? On a five-point scale, are you (1) very weak, (2) weak, (3) average, (4) strong or (5) exceptional? Do you have a number or level in mind? Good. Now ...