小题1:He is in New York for his holiday.
小题2:Because he couldn’t find the piece of paper on which he had written her e-mail address.
小题3:No, it wasn’t.
小题1:根据for a holiday in New York,可知是去伦敦旅行，故答：He is in New York for his holiday.
小题2:根据But he couldn’t find the piece of paper on which he had written her e-mail address. 可知答：Because he couldn’t find the piece of paper on which he had written her e-mail address.
小题3:it’s hot here.不但可以表示这里很热，而且可以表示这里的人很热情的意思。联系上文the snow-covered streets of London伦敦是冬季，纽约同样处于北半球也应该是冬季，不应该很热。以及下文把这个老妇人吓昏过去的事实，也证明了这句话是这里的人们很热情的意思。故答;No, it wasn’t.