1. Luck 52            the people who want to show themselves            (给……提供……) a good stage.
2.            (多亏……) the modern communications, we can keep in touch with our friends and relatives far
   away easily.
3. China has            great            (取得进步) in sending man-made satellites into space.
4. Our new headmaster looks very young. I think he is            (少于) thirty years old.
5. Mike is weak in English. In order to            (赶上) others, Mike works harder than before.