问题
选择题
6. The Olympic Games _____ held every _____ years.
A．is; four
B．are; four
C．is; five
D．are; five
答案
答案：B
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6. The Olympic Games _____ held every _____ years.
A．is; four
B．are; four
C．is; five
D．are; five
答案：B
