英語正確的單詞怎么寫？

　　雙語例句:

　　If Casey is correct, the total cost of the cleanup would come to$ 110 billion.

　　如果凱西是對的，清理的總花費將達1,100億美元。

　　These prices are correct at the time of going to press.

　　這些價格在付印時是準確無誤的。

　　I think you've made the correct decision.

　　我認為你的決定是正確的。

　　Do you have the correct time?

　　你的表走得準嗎？

　　What's the correct way to shut the machine down?

　　這臺機器該怎么關呢？