血液由 和 组成。贫血是青少年时期的一种常见疾病,为了预防贫血,应多吃含 及 较多的食物,确保健康。
永远不要为了结交朋友或保持友谊而做一件错事.
Never do a wrong thing to a or keep one.
我们绝不要放弃实现自己梦想的努力.
We will never give up to make our dreams true.
It is (good) to listen than to speak.
She (study) English in the school since she left her hometown.
The road to (succeed) is to work honestly.