求初二英语语法现在完成时练习题
问题描述:
求初二英语语法现在完成时练习题
50个左右
答
现在完成时专项练习一、 单项选择.1、Bothhis parents look sad . Maybethey______what's happened to him .A.knew B.have knownC.must know D.will know2、Hehas_______ beentoS...