根据句意及汉语提示完成下列句子。

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.