The zoo keepers is worried because the number of visitors __ smaller and smaller. A．become B．became ...
2023-01-25 03:25:37 172次 2010年福建省高一下学期期末考试英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The zoo keepers is worried because the
number of visitors __ smaller
and smaller.
|
A．become
|
B．became
|
C．is becoming
|
D．have become
|
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