It was ______ the old worker came that we______ the experiment.
(2013•新课标全国卷Ⅱ) Four and ________ half hours of discussion took us up to midnight,and ________ break for cheese,chocolate and tea with sugar.
The emergency center is in great need of O-type blood,but there is__________ at hand.
(2014届山东省潍坊市高三3月模拟考试英语试卷) It suddenly occurred to me I hadn’t locked my door.
What seems to be a simple idea always turns out _____ that is hard to put into practice.
I’m going to buy my daughter another interesting novel, _______ she would like to read.