It"s no good learning English without practice.

Man was, is and always will be trying to improve his living conditions.

我想知道他把表送給誰(shuí)了。

It took years for Einstein"s theory to gain acceptably.

It is when you nearly lose someone when you become fully conscious of how much you value them.

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

All of them are （） at Lana"s achievement.

Cars turn into dead weapons when they are driven carelessly.

The doctor will get more practice out of me than out of ten ordinary patients.

所有的公共場(chǎng)所都應(yīng)完全禁止吸煙。