The most important economic activity in Canada is ______.

单项选择题The Victorian Age, eminently represented by Dickens and Thackeray, was mostly regarded as an age of ______in English literature.

单项选择题______ has become the world's largest exporter of fish.

单项选择题Which of the following does NOT belong to the Indo-European family

单项选择题The leading ______ state in the United States is Wisconsin.

单项选择题The language phenomenon that words having different meanings have the same form is called ______.