Is this your second time (send) an e-mail?

Is this your second time (send) an e-mail? This is only second This is the second day of your university life .A sophomore is introducing the university to you , This is our second English lesson是什么意思 Go along this street,and then turn right at the second crossing.The park is on your left.中文写 is this your skirt this is your Maybe this is your Is this your uncle? this is your aunt. is this your business Is this your schoolbag? Is this your (空格) Is this your schoolbag? this is your pencil Is this your cake. This is your explanation? Is this your-----photo