Every few years, the coal workers their lungs X-rayed to ensure their health.A. are havin
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解决时间 2021-01-03 21:06
- 提问者网友：箛茗
- 2021-01-03 06:31
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
最佳答案
- 五星知识达人网友：山君与见山
- 2021-01-03 06:52
A. are having(答案→)B. haveC. have hadD. had had解析：本题考查时态。根据时间状语every few years,可判断本句应为一般现在时，因此答案选B。句意：每过几年，煤矿工人都要做X射线保证他们的健康。
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- 1楼网友：逐風
- 2021-01-03 07:38
谢谢了
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