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Flint (flint stone) - this is the hardest and hardest of simple natural stones. often the flint stone is colored by oxides of iron and manganese in different colors, with smooth transitions between them. in ancient times, flint fragments were used to cut fire. ancient man was used to make weapons and household items (arrowheads, flint knives, etc.)
1,the twins said they were watching tv then. 2. ivan said that the dog had eaten his home work the day before. 3. mrs vine said that they had to give her their essays the following day. 4. den asked me why rob had been on tv. 5. i asked sally how her trip to turkey had been. 6. the woman asked ted if she might ask him a few questions.
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