(1) ±³Àç¸í : ¿µ¾î °íµæÁ¡ ¹®¹ý ¿Ï¼º(2) °ü·Ã ÆäÀÌÁö Âʼö : 75ÂÊ (3) ¹®ÀÇ»çÇ×
7¹ø¿¡ She mustn't have attended the play~¿¡¼ mustn't¸¦ couldn't·Î ¹Ù²ã¾ß ÇÑ´Ù°í ³ª¿ÍÀִµ¥ ±×·¯¸é coudln't have attended °¡ µÅ¼ Âü¼®ÇßÀ»¸®°¡ ¾ø´Ù¶ó°í Çؼ®µÇ´Â °Í ¾Æ´Ñ°¡¿ä? ¹®Á¦ÀÇ ¿ì¸®¸»Ã³·³ Âü¼®ÇÒ ¼ö ¾ø¾ú´Ù·Î Çؼ®ÇÏ·Á¸é have¸¦ ¾ø¾Ö°í coudln't attended¶ó°í °íÃÄ¾ß ÇÏ´Â °Í ¾Æ´Ñ°¡¿ä?
±×¸®°í µ¿ÀÏÇÑ ÆäÀÌÁö 10¹ø¿¡ ¿Ö ´Ü¼ø°ú°Å noted°¡ ¾Æ´Ñ ÇöÀç¿Ï·á¸¦ ¾²´Â °ÍÀΰ¡¿ä? ÀÌ ¹®Àå¿¡¼ ÇöÀç¿Ï·á¸¦ ½á¾ß ÇÏ´Â ÀÌÀ¯¸¦ Àß ¸ð¸£°Ú½À´Ï´Ù.