We were infordmed that our flight ____ because of the mechanic failure

With one or more cylinders out of operation, the engine speed must be reduced because（）

It is no （） arguing about this problem, because our agent will never change his mind.

Intelligent animals change their behavior _____ the demands of the situation or environment.

2007年9月22日，“第（）届中国英语写作教学与研究国际研讨会”在贵州大学花溪北校区行政楼学术报告厅隆重拉开帷幕。校长陈叔平、校党委副书记郑元宁出席开幕式。来自麻省理工大学的终身教授、英语写作伦理家Peter Elbow，香港城市大学英语及传媒系系主任、篇章结构学专家Vijay Bhatia，新西兰梅西大学副校长理事会原委员、国际英语教授协会执委会轮值主席Dick Corballis以及北京对外经济贸易大学英语学院院长王立非等国内外知名专家及全国各高校代表参加了开幕式。

We had to submit our project without a bibliography, because listing our sources would have took Jose and I another day to complete.

African Americans stopped using chemical straighteners or hot irons because ______.

If we carry out our plan with（）we will surely achieve our goal sooner or later.

英语科技论文中讨论的写作要求包括（）

Demand curve（or demand schedule） 需求曲线（或需求表）

Never（）the lifeboat or lifecraft disengaging locks or hydrostatic release gears because it can cause them to fail to function.

Never（）the lifeboat or lifecraft disengaging hocks or hydrostatic release gears because it can cause them to fail to function.