Duolingo Read and Complete or Type the missing Letters appear 4-6 times in the test. Each time, you have 3 minutes to complete the exercise. Here is Missing Letters practice exercises 7-9. Find more exercises by visiting the main page of Duolingo Missing Letters Practice Exercises.
Duolingo Read and Complete / Missing Letters Ex 7
Duolingo Read and Complete / Missing Letters Ex 8
Duolingo Read and Complete / Missing Letters Ex 9
It is a good idea to time your answers so that you develop a habit of answering questions within a time frame. You should also practice other interactive exercises for Duolingo English Test Practice on this free platform.
Here are some links:
Duolingo Interactive Reading Test Exercises
Duolingo Interactive Read and Select / Missing Letters in Duolingo Practice