I thought you might be tired, （） is why I decided to help you.

There is nothing so admirable as a man whose sacrifices his life and happiness for others. 

所有的公共場(chǎng)所都應(yīng)完全禁止吸煙。

事實(shí)勝于雄辯。

Have run out of fuel, the plane crashed to the ground.

The guide dogs helping the people with dementia will （）.

What effect has the Internet had on music piracy

An idle youth, a needy age.

It"s no good learning English without practice.

The wound soldier made an effort to stand up, but the general stopped him.