Every few years, the coal workers ______ their lungs X-rayed to ensure their health. -题库考试答案搜索网

Every few years, the coal workers ______ their lungs X-rayed to ensure their health.

单选题

2022-06-30 13:17

A、are having
B、have
C、have had
D、had had

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正确答案

B

试题解析

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。

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