The zoo keepers is worried because the number of visitors __ smaller and - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

The zoo keepers is worried because the number of visitors __ smaller
and smaller.

A．become

B．became

C．is becoming

D．have become

答案

解析

考查主谓一致。the number of……的数目，谓语动词用单数形式。根据句意用现在进行时。句意：动物管理员担心游客的数量正在变得越来越少。

核心考点

试题【The zoo keepers is worried because the number of visitors __ smaller and 】；主要考察你对一般现在时等知识点的理解。[详细]

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