题目内容
It’s not easy for trailwalkers to finish walking a ________ trail within 48 hours.
[ ]
A.100-kilometre
B.100-kilometres
C.100 kilometres
D.100 kilometres’
答案:A
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题目内容
It’s not easy for trailwalkers to finish walking a ________ trail within 48 hours.
A.100-kilometre
B.100-kilometres
C.100 kilometres
D.100 kilometres’