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D. Discussed D 3. ___ in the fog, we were forced to spend two hours in the woods. A To lose B. Losing C. Lost D. Having lost C 4. ___ in white, she looks much more beautiful. A. Wearing B. Dressing C. Dressed D. Having dressed C 5. ___, the old man is living a happy life. A. Taking good care B. Taken good care C. Having taken good care D. Taken good care of D 6. The old man walked in the street, ___. A. followed by his son B. followed his son C. and following his son D. and followed by his son A 8. ___ from heart trouble for years, professor white has to take some medicine with him wherever he goes. A. Suffered B. Suffering C. Having suffered D. being suffered C 7. When first ___to the market, these products enjoyed great success. A introducing B. introduced C. introduce introduced his journey from abroad, Richard Jones returned home,____. A. exhausting B. exhausted C. being exhausted D. having exhausted