高一英语语法填空

题目

高一英语语法填空
People can call 911 when they need help.The police will come quickly.This phone number should be used only__1___an emergency.But there have been some problems with people using the 911 phone number.___2____than half of the calls made to it are an accident.These accidental calls are not real emergencies.
Calling 911 when you do not need__3__can be very bad.It wastes the time of the people answering the calls.It can even force someone __4___has a real emergency to wait before __5___(get)the help they need.
Many accidental 911 calls come from cellphones.Sometimes keys on the phone ___6__(push)and the call goes through without the owner of the phone knowing that he has called an emergency number.People are trying to find __7___way to solve this problem.
They are testing a new problem that might help solve the problem of accidental 911 calls.This problem will make__8__(call)of 911 calls push another key on the phone __9__ it is a real emergency.People hope that this

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