電子課本網(wǎng) › 第54頁

第54頁

信息發(fā)布者：

in the street/on the road

we can't/mustn't/shouldn't turn left

in the library/reading room

we can't/mustn't/shouldn't talk loudly there

c

a

b

a

b

be friendly to our classmates. And we must listen to our teachers carefully

It's kind of you to help others.

talk loudly in class. It's impolite. Don't run in the classroom.

We mustn't eat or drink in class.

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