UNIT 7: LESSON 1.2

There are no animals that naturally eat the lionfish here, so we (2) have been trying/ tried to train sharks to eat them, but it didn't work.

The sharks only (3) wanted/ have been wanting to eat the lionfish if one of our divers fed it to them.

Since then, we (4) have been working/ worked on making a robot that will be able to kill lionfish with electricity.

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