I supposed that the after clicking "Show Answers" answers to all or answers to the wrong ones would appear separately somewhere else on the screen. but after wasting a lot of time i came to know that the correct answers where shown in those columns only where i entered the wrong answer!! the worst thing was, even the color didnīt change from red.
I mean to say it was difficult to note where the correct answers had appeared. some changes to the system are required.