求一篇用现在完成时,和过去完成时写的作文,20；40之前
问题描述：
求一篇用现在完成时,和过去完成时写的作文,20；40之前
答
I have ever been to Shanghai for two times.Shanghai is a very beautiful city with a long history.I knew that many imperialist countries had invaded it.People said a lot of treasures had been grabbed b...