Mr. White, along with his assistants, ______ on the project day and night to meet the deadline.
(2013·北京卷) the course very difficult, she decided to move to a lower level.
(2013·北京卷)When we saw the road with snow, we decided to spend the holiday at home.
(2013·大纲卷)I got to the office earlier that day, the 7:30 train from Paddington.
______how others react to the book you have just read creates an added pleasure.
There are some health problems that, when ____in time, can become bigger ones later on.