Every few years, the coal workers their lungs X-rayed to ensure their health.
A. are having
B. have
C. have had
D. had had
Every few years, the coal workers their lungs X-rayed to ensure their health.A. are having
答案:2 悬赏:70 手机版
解决时间 2021-12-20 08:49
- 提问者网友：玫瑰园
- 2021-12-20 03:47
最佳答案
- 五星知识达人网友：动情书生
- 2021-12-20 04:08
A. are having(答案→)B. haveC. have hadD. had had解析：句意：每个几年煤矿工人就要进行一次肺部x光检查来确保他们的健康。这是经常性的行为，故用一般现在时，故选B。
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- 1楼网友：你哪知我潦倒为你
- 2021-12-20 04:54
这下我知道了
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