1. By the time we reached home, it was quite dark. (¿ì¸®°¡ Áý¿¡ µµÂøÇßÀ» ¶§¿¡´Â ¾ÆÁÖ Ä¯Ä¯ÇØÁ³¾ú´Ù) 2. sell by the yard (1¾ßµå´ç ¾ó¸¶·Î ÆÈ´Ù) 3. I haven't got it by me. (±×°ÍÀº Áö±Ý ³ªÇÑÅ× ¾ø´Ù) 4. Let's begin by reviewing the last lesson. (¿äÀü °úÀÇ º¹½ÀºÎÅÍ ½ÃÀÛÇսôÙ) 5. Time goes by. (½Ã°£Àº È帥´Ù)