他对我们的安全负有责任。
He is________ ________our safety．
根据汉语意思和所给的提示词翻译句子
昨天他未能找到他的钱包。(fail，wallet)
_______________________________________________________________________________
你必须考虑下一步该做什么。
You have to________ ________ ________ ________next．
那个勤奋的学生渴求知识。
The hard-working student is________ ________knowledge．
(2013天津)—Mum，I’ve got the first prize in the photo competition．
—________!
A．Good luck
B．Not at all
C．Good idea
D．Congratulations
If we want to work for our country in the future，________，we should have a strong body and rich knowledge．
A．the first
B．first of all
C．for the first time
D．after all
