The zoo keeper is worried because the number of visitors ______ smaller and smaller . A．is becoming ...
2023-02-15 03:11:01 213次 2015届江苏宝应县南片六校七年级下期5月份月度调研英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The zoo keeper is worried because the number of
visitors ______ smaller and smaller .
A．is becoming B．become C．became D．to become
本题链接：
