单项选择题The largest lake in Britain is ______.
单项选择题The Romans leaded by______ came with 10,000 soldiers and landed on the shore of Kent in 55B. C.
单项选择题Walt Whitman was a pioneering figure of American poetry. His innovation, first of all, lies in his use of ______, poetry without a fixed regular rhyme scheme.
单项选择题Among the great Middle English poets,Geoffrey Chaucer is known for his production of ______.
单项选择题The largest and smallest states of the United States are ______.