.The purpose of the research had a more important meaning for them than ______.
27. ----Can I catch a train to Beijing? ----You _____miss one. There are many trains to Beijing.
26. My suggestion _____ John should be sent _____his mother works is reasonable.
25. The American Civil War lasted four years _____the North won in the end.
24. The task was difficult, but Helen’s _____expression let me know that she would not give up.
23. I have two sisters, _____ working in this city.