29. --- David has made great progress recently . --- ____, and ____ .
(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.
(2013·新课标Ⅱ卷)I got to the office earlier that day, the 7:30 train from Paddington.