... she is. - Is it ? - , it is not. - Is he ? - , he is. - Is she ? - , she is not. - Is it ? - , it is. - Is it ? - , it is not. - Is it ? - , it is. - Is it ? - , it is ... she is not. - Is it easy? - Yes, it is. - Is he dirty? - No, he is not. - Is she clean? - Yes, she is. - Is it difficult? - No, it is not. - Is it loose? - Yes, it is. - Is it ... từ "yes", "no" ở những chỗ cần thiết). - Is he ? - , he is. - Is she ? - , she is not. - Is it ? - , it is. - Is he ? - , he is not. - Is she ? - , she...