相关andoneofourmaininter的文学知识

问题详情：完形填空MywifeandIareretired(退休的)andoneofourmaininterestsistravel.We1 travelingonourowntotravelingwiththetourgroup.Lastmonthwebeganthefirststep(步)of 2 aEuropeanvacationforthissummer. ...