To ensure that no student drop out of school for lack of money.这里面为什么是lack ,而不是lacking?不是说介词后面加动词的ing形式吗?

the saller shall ensure and warrant to the buyer in writing that no third party has. Because the only way to ensure that quality through.为什么不是is to ensure! No trouble was spare to ensure our comfort是什么意思 中文 provide representation to project team to ensure that. ensure sb that 还是ensure that?例句, 英语翻译Montreal has colouful nightlife,with many restaurants and clubs,as well as cultural and street festivals to ensure that no visitors is ever bored. 英语翻译To ensure that no defect is sent on to the next assembly station,Toyota has a “line-stop” system,which can be used with no penalty to a worker. ensure to的意思 edexcel chemistry...anyone can help me..how you would mix the acid and coral to ensure that no carbon dioxide escaped from the apparatus.be more detailed.also,anyone who know how to answer the questions about hazard? 英语翻译Finally,please ensure that no text or table in the document is highlighted,before sending the file to the target journal.请不要软件翻译~这就话的准确意思是什么呢? To ensure that no student drop out of school for lack of money.这里面为什么是lack ,而不是lacking?不是说介词后面加动词的ing形式吗? In order to ensure that he can attend the meeting,I called him up in advance.to在这里不是介词吗?为什么ensure后面不加ing? i asked god to ensure that you will one day fall in love with Please ensure that you have used the complete Link(URL) to retrieve this page it describes the measures we should take to ensure that we drink clean water.看不懂 please ensure that the handset is set to portrait for this To view this page ensure that Adobe Flash Player version 10.0.0 or greater is installed Applicants are screened to ensure that none of them is a security risk.翻译.