四、连词成句，注意单词中字母的大小写和标点符号。
1. was, scientist, a, great, she (.)
2. plays, many, he, wrote, great (.)
3. saved, lives, people's, he, many (.)
4. he, hero, and, is, fireman, a, is, he, a (.)
5. in, the, China, east, of, Shandong, is (.)

1. She was a great scientist.
2. He wrote many great plays.
3. He saved many people's lives.
4. He is a fireman and he is a hero.
5. Shandong is in the east of China.