Last week you brought a pen drive from electronic store. But your computer stopped acknowledging it after three days. Write a letter of complaint to the retailer, describing the problem and asking for the replacement. plzzz answer

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martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

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