By law,when one makes a large purchase, he should have _____ opportunity to change his mind.

 Children are      to meet with setbacks as they grow up, so their parents don’t have to worry about it.

--How are your recent trip to Sichuan?—I’ve never had ______ one before. 

 ________ cold, he covered his blanket, _____ only his arms _____ .

In the history of Chinese revolution, Taierzhuang Battle was a ________ battle in which both sides suffered heavy losses.