I. (A, B) I. Have we met before? 2. I have often seen his name in the papers this year. 3. I have been trying to catch the waiter’s attention for about 15 minutes now. 4. She has been studying English for a year and has learnt many words and expressions. 5. I haven't heard about him since yesterday. 6. I have been looking for him since I finished my lesson but I haven't found him. I have been to his office and to the laboratory but he isn’t there. 7. “Hello, Sven. Have you seen Alex yet?” - “No, I haven't been to the shop floor today. I have been talking on the phone to our clients all morning.” 8. I have been up here since about six. I have been wandering around for hours. 9. I have come to you to invite you for a ride in the car. 10. I expect these young men have informed you who I am. 11. I really don’t know what you have been doing there all this time. 12. I have loved you ever since I first saw you. 13. And that’s where they have been staying ever since.
II. (A, B, C) 1. “I know what you have been thinking of these last days,” he said. “Have you made up your mind?” 2. They have been struggling with this problem for about a month and they have solved it at last. 3. They have been discussing the case for hours but have been unable to come to any decision. 4. You have seen Harry again. He has put this idea into your head. 5. You have been listening to gossip. The things you have heard are quite impossible. 6. I have been waiting here since 10 o'clock. Nobody has looked in here. 7. I have been telling you so for years but you have never paid any attention. 8. She has been talking about it ever since I met her and nothing has come out of it. 9. She has been doing shaping since September and her figure has improved remarkably. 10. You have been asking him this question for a week and still he has not answered you.
1. have to
2.have to
3.doesn't have to
4.has to
5. have to
6. don't have to
7. don't have to
8. have to
9. doesn't have to
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