O EXERCISE 17. Present perfect progressive and past perfect progressive. (Charts 3-2 and 3-4) Directions: Use the present perfect progressive or the past perfect progressive to complete the sentences. 1. We (wait) have been waiting for Nancy for the last two hours, but she still hasn't arrived. 2. We wait) had been waiting for Nancy for over three hours before she finally arrived yesterday. 3. It is midnight. I (study) for five straight hours. No wonder I'm getting tired. 4. It was midnight. I (study) for five straight hours. No wonder I was getting tired. 5. Jack suddenly realized that the teacher was asking him a question. He couldn't answer because he (daydream) for the last ten minutes. 6. Wake up! You (sleep) long enough. It's time to get up