bigger box for the answers of trial-questions (teacher)

During the trials we have to give different possibilities for the answer of a question. But if the answer is longer than a few words, we have to write them blind, because the box does not scroll or is big enough to show a whole sentence. Because of this there can be mistakes, which we can't see during creating the trial. 

Writing the answers blind is really nerve-wracking and unpractical. That's the reason why we, as teachers, wish a bigger box for the answers during the creation of a trial or a box that scrolls.