1. Mary has locked the door.
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2. She has told me about the story.
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3. I have read this book many times.
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4. We have completed all the preparations for the task, and we're ready to start.
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5. This company has produced new types of computers.
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6. They have interviewed several teachers for the job.
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7. George has sent some texts and pictures to his friend's cell phone.
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8. They have developed some programs for the human resource department of their company.
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9. Someone has put the book under the bench for more than two days.
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10. The typhoon has damaged the bridges because of its strong wind.
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