You can create a single fill-in-the-blank question in your quiz.
With the Questions tab selected inside a new quiz, click the New Question button .
Set Name, Type, Points and Edit Fill-In-the-Blank Question Details
Quiz questions are not automatically numbered for instructors. To add a custom name to your quiz question, enter the name in the Question Text field . Custom names can help you identify quiz questions more easily. Regardless of the question name, students always see quiz questions in numerical order (i.e. Question 1, Question 2).
Click the drop-down menu and select the Fill In the Blank question type 
Enter the number of points the question is worth (quiz totals are calculated based on the combined total of questions) .
To build a Fill-in-the-Blank question, you will need to enter the following details:
The question text (use the Rich Content Editor to include video, images, math equations, or flash activities).
Text for the possible answers.
Currently, fill-in-the-blank answers are not case-sensitive. The only way a student will get the answer incorrect is if it is left blank or the answer is misspelled. You can click Add Another Answer to add as many versions of the correct answer as possible if you desire.
Note: If a student does not enter any of the possible answers but still submits a valid response, instructors may need to manually grade the quiz to restore points that they lost.
Enter Feedback Text
You can choose to give students feedback in the answer comments fields. To leave feedback for a specific answer, click the comment field beneath the answer .
You can also create general answer comments for the quiz question as a whole . Students who select the correct answer will see the feedback in the green comment field. Students who select any incorrect answer will see the feedback in the red comment field. All students will see the feedback in the blue comment field.
Student View for Fill-in-the-Blank Question
This is what students see when they encounter a Fill-in-the-blank question in a quiz.
Students will see if their answer is correct as indicated by the green flag .
If you allow students to see the correct answers, they will see all the potentially correct responses (if any) indicated by the gray flag  after submitting the quiz.
Students will see if their answer is incorrect as indicated by the red flag .
If you allow students to see the correct answers, they will see potentially correct responses indicated by the gray flag  after submitting the quiz.