All assembly line workers are advised to check______time cards to make sure their working hours are properly marked.

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问题 All assembly line workers are advised to check______time cards to make sure their working hours are properly marked.

选项 A、theirs
B、their
C、them
D、they

答案B

解析 词汇:代词1.这是一道词汇题,选项均由代词构成。2.check是及物动词,不能直接接宾格,C选项排除。3.空格后出现名词(time cards),因此所有格(B)their为正确选项。
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