英语翻译I had a very nice surprise this evening .A few minutes a

英语翻译
I had a very nice surprise this evening .A few minutes after dinner ,there was a knock at the front door .To my surprise ,it was Johnny Smith .“ Hello ,Johnny ” I said .“ What are you doing here ” Johnny is an American .He left my school and went back to American last year with his parents .He said he came back because his father has another job here .They are going to live here again for another two years .I was really happy to hear that .We were good friends when he was here before .I asked him to come in .I took him in to see my mother and father .They were both very happy to see him .Dad said ,“Now Tony can get help with his math homework again.” But that’s not why I’m happy Johnny is back .I’m happy because he’s my friend.