观察下面的图片,判断以下句子正误,正确的写T,不正确的写F。
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1.The picture is about the traffic lights.
________2.We must pay attention to the traffic lights.
________3.When it's red, the car can go straight, but the people who are walking should stop.
________4.When it's yellow, everyone must stop.
________5.The people who are walking can't go on the street.
________