Well, one approach is to turn off Moodle's automatic display of correct answers, and instead write 'General feedback' for each question, in which you give the right answer, and any explanation to help the student understand what they were supposed to learn from the question.
But, you are right, for this question type, with this sort of question, the automatic display of the right answer could be better. You could add an 'Improvement' request in the Tracker. That would be the official way to suggest that is done one day.
But, you are right, for this question type, with this sort of question, the automatic display of the right answer could be better. You could add an 'Improvement' request in the Tracker. That would be the official way to suggest that is done one day.