单选题 If you want to ______ a pleasant visit, find out as much as possible about the manners and customs of your host country.
  • A.secure
  • B.ensure
  • C.assure
  • D.restore
【正确答案】 B
【答案解析】[解析] 各项的意思是：secure“握紧，把……弄到手”；ensure“保证；确保”；assure“使相信，使确信”；restore“交还，重建”。根据句意判断，答案为B。