题目内容：

阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

It's a popular belief that fish can't remember anything1. longer than seven seconds. It may seem sad to think that they don't remember what they've eaten or where they've been. But a recent study 2. ( find) that a kind of fish called African cichlids can remember events from as long as 12 days ago. Researchers trained the fish to go to a certain area of their tank 3. ( get) food. They then waited for 12 days before 4. ( put) them back in the tank again. With the help of computer software, they found the fish still went to the same place where they first got food.