It seems hard to watch someone yawn（打哈欠） and not to yawn ourselves. Even reading about yawning can make you do it. Now, a new study has found why yawning has such a powerful force.
根据句意及首字母提示完成单词。 1. The film is about the Long M_______? Have you ever seen it? 2. I’m going to fly there. Would you buy two a_______ tickets for me? 3. Let’s buy so
One day, a poor boy who was trying to pay his way through school by selling goods door to door found that he only had one dime (一角银币) left. He was hungry so he decided to 1 fo
