一、根据中文提示，补全课文内容。
It's time for PE! Yang Ling, Su Hai and Wang Bing go to the sports ground. They （不应该跑）on the stairs. It's not （安全的）. They （应该靠右边走）and they （不应该跳）from the stairs. In PE class, the PE teacher asks how to keep safe. They （应该热身）first. They （不应该推）others. Mike pulls his classmate. The PE teacher tells him he （不应该拉）his classmate's clothes. He may hurt him. After running, Su Hai feels tired, but she （不应该坐下）right now. They （应该慢慢走）.

shouldn't run; safe; should keep to the right; shouldn't jump; should warm up; shouldn't push; shouldn't pull; shouldn't sit down; should walk slowly

二、根据首字母或图片提示，补全对话。
A: Hi, Liu Tao! Let's go to the sports ground to play football.
B: OK! But we should w u first before playing.
A: You're right! Let's do it.
(After playing)
A: I'm so tired. I want to s d on the ground.
B: You shouldn't do that. You should w s.
A: What else should we do to k s at school?
B: We shouldn't on the stairs.
A: You're right. Safety is very important.

warm up; sit down; walk slowly; keep safe; push others

三、从方框中选词补全短文。（有一个多余）
should shouldn't warm up hurt safe careful run help
It's Saturday morning. Tom and his friend Jack go to the park to play football. Tom wants to to the football field quickly. Jack says he run fast. He should be . Before playing, Jack says they should first, or they will their bodies. Tom listens to Jack. They play football happily. A little boy falls down on the road, and they him stand up. They tell the boy to be careful and keep . It's a happy day for them!

run; shouldn't; careful; warm up; hurt; help; safe