用现在分词形式填空, 改写下列句子。(有的空填两个词) 1. When you cross the street, you should look around. -----When __1____ the street, you should look around. 2. As he was seriously ill, he couldn't go for a walk. ------___2__seriously ill, he couldn't go for a walk. 3. Because he did not know how to do it, he went to her for help. -----__3____ how to do it, he went to her for help. 4. Li Ming sat at the desk and wrote an article in English. ----___4____at the desk, Li Ming wrote an article in English. 5. As soon as she had made the beds, she started making breakfast. ----- ____5__the beds, she started making breakfast.