he is an ___man请说明理由

he is an ___man请说明理由 John is a ___man.He is a businessman. There is ( )''h'' in the word ''hour''.A:a B：the C:an 请说明理由, 单选题：He is a difficult man＿＿＿.请说明理由 He is going to be able to.请说明为什么不行 理由和原因 The ___man is my farther. He who fails to reach the great wall is not a ___man He is an Chinese.语法正确吗?那He is an English.有错请改正,并说明原因,无错,也要说明 He decides to work ______than last year.（请说明理由, 请说明理由  请说明理由. 请说明理由