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单选:is ___ easy to learn to swim?
a.that b.it c.this
人气:477 ℃ 时间:2019-10-10 07:18:07
解答
B
变为陈述句是It is easy to learn to swim.
这里it做形式主语,真正的主语是to learn to swim
所以,这句话也可以说是To learn to swim is easy.
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