Bài 1: Rewrite the following sentences to express purpose (viết lại các câu sau sử dụng cụm từ chỉ mục đích) 1. I took a bus because i didn't want to be late. 2. She bought an envelope because she wanted to send a letter. 3. He didn't come to her wedding party because he didn't want to be sad. 4. She went to the bookstore because she needed to buy a book. 5. Because he wanted to buy a computer, he borrowed some money from me.