Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now listen to the passage. The speaker thinks the driving test is a terrible experience ______
A．because the government officers are hard to please B．because the learner has to go through several tough tests C．because the learner usually fails several times before he passes it D．because the driving test usually lasts two months