填空题

Traveling used to be so expensive that many middle-class people could not afford it.

【参考答案】

Y

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填空题

In 2004 more travelers paid visit to central Paris than to New York City.

问答题

现在养狗的人越来越多；2．不文明养狗给社会造成了危害；3．我的看法。Raising Dogs in the City