A、They are calling 26 schools in New Jersey. B、They are trying to protect some American schools. C、They are locking down some st

(5) Police are investigating threats against dozens of schools this week in seven U. S. states. Threats were called in to at least 26 schools in New Jersey on Tuesday. Most were to schools in suburbs of New York City, police said.
    Other threats were called in Tuesday to schools in Maryland, Iowa, Massachusetts, Delaware, Arizona and Florida. Wednesday brought more bomb threats to schools in Delaware and Arizona. (6) The threats come at a time when polling shows Americans are worried about terrorist attacks. At Clifton High School, a voice mail warned of a bomb. A separate call warned of a "mass shooting" at the school later on Tuesday.
    The responses to the threats varied, according to news reports. Some schools moved students to other buildings while officials searched the threatened schools. (7) In New Jersey, some students said they waited outside their schools for an hour or more without coats in below freezing temperatures. Other schools closed for the day. And some kept students "locked down" in their classrooms.
5. What are police doing?
6. Which of the following statements is true according to the news?
7. What measures did schools take?