根据句意，用括号内所给单词的正确形式填空。

1. Don't read in the sun. It may _____ (hurt) your eyes.

2. Xiao Wang drives too fast, so he gets a ticket for _____ (speed).

3. He is in _____ (dangerous). Let's save him.

4. The station is about 15_____ (kilometer) away from here.

5. It's good to help children _____ (cross) the road.

防落梁挡块连接螺栓螺纹与梁底预埋套筒有效接合长度应大于（）倍的螺栓直径。