The man died some 3 years ago; high-blood pressure was the cause of his death. I knew him.<br/><br/><span style="color:#0000ff;">Are all of the following fine?</span><br/><br/>1.Today is his birthday.<br/><br/>2.Today was his birthday.<br/><br/>3.If he were alive, he would be 66 today.<br/><br/>4.If he were alive, he would have been 66 today.<br/><br/>5. If he is with us, he would have been 66 today.