More checkpoints were set up in the country to ensure residents could be ________ for the virus. A.c...
2022-05-07 11:00:20 140次 2020届江苏省镇江市高三6月调研考试（三模）英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
More checkpoints were set up in the country to ensure residents could be ________ for the virus.
A.cancelled B.contained C.strengthened D.screened
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