三、想一想，在以下情景中你该怎么说？快来选一选。
()1. 当你上课迟到时，你应该对老师说：
A. I’m very sorry. I am late for school.
B. Goodbye.
()2. 当你看到有人在大街上踢足球时，你可以说：
A. You must play football in the street.
B. You mustn’t play football in the street.
()3. 当你看到有学生随处乱扔垃圾时，你可以说：
A. You’re right.
B. Throw the rubbish in the bin.
()4. 当你发现有人在图书馆里大声叫嚷时，你可以说：
A. Don’t shout loudly in the library.
B. Don’t read books in the library.
()5. 当你看到有人买票不排队时，你可以说：
A. You must wait in line.
B. This way, please.

1. A 2. B 3. B 4. A 5. A

四、读一读，用所给提示，提出至少五条建议。

1. You shouldn't climb the tree. 2. You shouldn't pick flowers. 3. You shouldn't throw rubbish on the ground. 4. You shouldn't ride a bike too fast. 5. You shouldn't run fast and shout loudly.

本题要求根据所给的不良行为短语，用英语提出至少五条合理建议，五年级阶段常用“You shouldn't + 动词短语”的结构表达不应该做的事，符合该年级语法要求。