on, to, with; party, group, fleet In 1792, the year Napoleon declared war _________ Great Britain, the British navy commanded a _________ of over 600 ships and 100,000 seamen, a fact that would prove to be a key factor in its success.
【正确答案】：on,fleet
【题目解析】：declare war on 对……宣战，战船和海军构成的应该是舰队，fleet符合题目内容。