国家开放大学 / 综合英语(2)
正确率:100%
The Olympic Games _ _ _ _ _ _ _ held every _ _ _ _ _ _ years.
a. is,four
b. are,four
c.is,five
d.are,five
a. is,four
b. are,four
c.is,five
d.are,five
参考答案:
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