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阅读短文, 用T/F判断正误。
It was Sunday morning. The weather was fine. Lucy and Mary were playing in the park. Suddenly, they saw a beautiful bird on the grass. Lucy looked around. There was no one nearby. She quickly walked to the bird and wanted to catch it. Mary said, “We shouldn’t catch birds here. They’re our friends.” Then a park keeper came. He pointed at the sign on the grass and said, “Look at the sign. It means you can’t walk on the grass.”
(     ) 1.It was a sunny day.
(     ) 2.Lucy and Mary were in the zoo.
(     ) 3.They saw a beautiful bird on the grass.
(     ) 4.Mary wanted to pick some flowers.
(     ) 5.The sign on the grass means we can’t catch birds.