通过 www. ecp. com. cn 结交了一位新网友David,下面是他的有关资料,请你 根据他提供的信息,回答下列各句。 Name Sex Country Age Grade Row E-mail Tel David Smith Boy The USA 13 One Six Advidsmith@sina.com 0541-64824560 A: Is David a boy or a girl? B: __ 1 __ A: How old is he? B: __ 2 __ A: What grade is he in? B: __ 3 __ A: What country is he in? B: __ 4 __ A: What's his e-mail address? B: __ 5 __