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　　Siri on iPhone 4S is like a personal assistant．It lets you use your voice to do things on the iPhone．You can just talk to Siri as you talk to a person．Siri understands what you say,knows what you mean,and even talks back．

　　Say something like “Tell my wife I'm running late．” “Remind me to call the doctor．” “Any fast food restaurants around here?”,and Siri does what you say,finds the information you need,then answers you．It's like you're having a conversation with your assistant．

　　Siri not only understands what you say,but it's also smart enough to know what you mean．So when you ask,“Any fast food restaurants around here?” Siri will reply,“I found a number of restaurants near you．” Then you can say,“Hmm,how about hamburgers?” Siri remembers that you just asked about restaurants for something to eat,so it will look for KFC restaurants in the neighborhood．And Siri is active,so it will question you until it finds what you're looking for．

　　When you want to do something,just ask Siri to help you do it．Siri uses almost all the built-in apps on iPhone 4S．It plays the songs you want to hear．It gives you directions and shows you around．It makes calls,plans meetings,helps you remember and wakes you up．In fact,ask Siri what it can do－it even speaks for itself．

　　Siri is easy to use and does so much．You'll keep finding more and more ways to use it．

根据上面短文的内容填空。

1．Siri is like ________ and lets you ________ to do things on the iPhone．

2．When you ________ like “Tell my wife I'm running late．”,Siri will ________．

3．Siri is ________ to know what you mean and it will ________until you get what you want．

4．If you are lost somewhere,you can say to Siri,“________”．Then Siri will ________ and show you around．

5．The word “apps” in the passage is possibly ________ on iPhone 4S．