七、Think and draw. Lanlan 和Jack为大家普及了许多交通安全知识。除了下面这些，你还知道其他的吗？请想一想，并画一画吧。

Since this question requires drawing additional traffic signs, here are some common traffic signs that can be drawn:
1. No entry sign: A red circle with a horizontal white bar in the middle.
2. Speed limit sign: A red circle with the number indicating the speed limit inside.
3. Turn left only sign: An arrow pointing to the left.
Below is a simple text - based representation (you can draw them according to the description):
1. No entry sign:
Draw a red circle.
Draw a horizontal white bar in the middle of the circle.
Label it as "No entry".
2. Speed limit sign:
Draw a red circle.
Write a number (e.g., 50) in black inside the circle.
Label it as "Speed limit 50 km/h".
3. Turn left only sign:
Draw a blue rectangle.
Draw a white arrow pointing to the left inside the rectangle.
Label it as "Turn left only".