用所给动词的正确形式填空 That strange animal belongs to a species that scarcely been seen. 题目和参考答案——青夏教育精英家教网—

题目内容

用所给动词的正确形式填空

That strange animal belongs to a species that ________ (have) scarcely been seen.

答案：has
解析：

先行词是单数，动词要用单数形式。

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