thêm từ để hoàn thành câu the government /must/measures/preserve historical sites /the area they / not /decide/what/do/this situation it minght/good idea/find/the format of the exam/advance

 The government must take measures to preserve historical sites in the area.

 They can't decide what they should do in this situation. 

  It might be a good idea to find out about the format of the exam in advance.

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