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用括号中所给动词的正确形式填空,’使短文完整。

A drone (无人机) is a remote-controlled aircraft that can carry cameras and some other things.

New technology1. (make) drones cheaper and easy to buy in recent years.  More people use drones as a hobby, just like flying a kite.  In Australia, drones 2. (use) to search large areas and protect animals.  "You don't need 3. (worry) about getting attacked by crocodiles,"Dr Karen Joyce said.

But they may not be completely safe. There are more and more biologists 4. (use) drones and nobody really knows if they are causing harm to the animals (by scaring them).

One day, a drone 5. (crash) at a beach in the US, frightening visitors who were there .to take in the sunset.

Most countries have announced rules about where drones can fly.  But there aren't many rules for hobby drones.  "If drones become widely used in our society, there6. (be) a lot of problems," the lawyer Jennifer Lynch told us.

九年级英语语法填空困难题

少年,再来一题如何?
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