改正下面短文中的错误。对标有题号的每一行作出判断:如无错误,在答题卡该行右边横线上画一个勾(√),请在有错误的地方增加、删除或修改某个单词。 注意:1.每处错误及其修改均仅限一词; 2.原行没有错的不要改。 I like travel very much. I had been to most 1.___________ of the interested places in Britain already and I just 2.___________ don’t want other cold English summer. So I’ll go 在等差数列中,,则公差d为 .