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

The Crimea also released CDs for sale in shops because （）.

After reading the novel he was too exciting to go to sleep that night.

Having a conversation with people with dementia will be （）.

Cars turn into dead weapons when they are driven carelessly.

我們認(rèn)為節(jié)約用水非常重要。

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

Nobody can work well if he is distracting.

The author"s attitude towards gift giving is （）.

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