关于Sorryforhavingdelaye的百科

•  Sorryforhavingdelayed

• 问题详情： Sorryforhavingdelayed_______yourletter. A.tohaveanswered   B.toanswer    C.answering     D.havingbeenanswered【回答】C知识点：非谓语动词题型：选择题...
• 2019-06-1710117