求初二英语语法现在完成时练习题50个左右
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、Both his parents look sad . Maybe they ______what's happened to him . A. knew B. have known C. must know D.will know2、He has _______ been to S...