More checkpoints were set up in the country to ensure residents could be ________ for the virus.

当前位置：高中英语 / 单选题

1. (2020·镇江模拟) More checkpoints were set up in the country to ensure residents could be ________ for the virus.

A . cancelled B . contained C . strengthened D . screened

微信扫码预览、分享更方便

使用过本题的试卷