单项选择题
A(An)（）should be issued for every company complying with the requirement of the ISM Code by the Administration.
单项选择题 The ship should be operated by a company which is issued a(an)（）relevant to ship.
单项选择题 Christopher Columbus （） eighteen years （） planning for that wonderful voyage which he made across the Atlantic Ocean.
单项选择题 Water can’t be used to put out fires of （）
