问题补充：
More than one child to the cave to see the strange animal.
A. have gone
B. are gone
C. has been
D. is been
答案：
A. have gone
B. are gone
(答案→)C. has been
D. is been
解析：句意：一个以上的孩子已经去过山洞看到奇怪的动物。More than one+单数名词，“许多”，做主语，谓语用单数形式。故排除AB.D项动词形式错误。故选C。
