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High winds can be extremely c) destroying
This program,___is totally free, protects your computer against viruses. c) which
She is fond___making artificial flowers. B) of

Seventeen years ago Tom Clancy was an obscure Maryland insurance broker with a passion for naval history and only a letter to the editor and a brief article on the MX missile to his credit. Years before he had been an English major at Baltimores Loyola College and had always dreamed of writing a novel. His first effort, The Hunt for Red Octoberthe story of a Russian submarine captain who defects to the United Statessold briskly as a result of rave reviews, then catapulted onto the New York Times bestseller list after President Reagan pronounced it the perfect yarn and non-put-downable. Since then Clancy has established himself as an undisputed master at blending exceptional realism and authenticity, intricate plotting, and razor-sharp suspense.

1. What are you (doing) here? — I (am preparing) for my report. — How long have you (been preparing) for it? — Oh, I (have been working) since morning. 2. He (had been teaching) at school for five years when the WAR (broke) out. 3. She (has been studying) English since last year. 4. What are you (reading)? — I (am reading) a magazine. — How long have you (been reading) it? — I (have been reading it for half an hour. 5. She (had been living) in Moscow for ten years when her sister ( came) to live with her. 6. Our teacher (has come). Now he (is speaking) with our monitor. 7. They (were speaking) when I looked) at them. 8. I (had been  walking) for about an hour when I (saw) a little house not far from the river. 9. When he had read) the newspaper, he ( gave) it to his brother. 10. He ( left) for Rostov in 1990 and since then he (has been living) there. 11. At this time tomorrow we (will be discussing) your report. 12. Now she (is reading) the book which I  gave) her yesterday. 13. Have you ever ( been) to London? — Yes, I (was) there last summer. 14. What is  your friend doing) now? — She (is having) dinner. She usually (has) dinner at this time. 15. I (have bought) a new dress. I (will show) it to you tomorrow when you come) to my place. 16. So you begin working tomorrow! And who will take) care of your children when you (are gone) to work? 17. Hello, Peter! Where are you (going)? — I am going) to the library.