1.

Our classroom is on the second floor.

我們的教室在二樓。

classroom：教室

2.

A giraffe has a very long neck.

長頸鹿有很長的脖子。

giraffe：長頸鹿

3.

This is not a correct sentence.

這不是一個正確的句子。

sentence：句子

4.

Smoking is not good for your health.

抽煙對你的健康不好。

smoke：抽煙

5.

She argued him out of smoking .

她說服他戒菸。

smoking