lack的用法2:The couple died because of__A_oxygen when bathing.A

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lack的用法
2:The couple died because of__A_oxygen when bathing.
A:lack B:a lack
C:a lack of D:a lack for
3:Though__C_money,hie motehr managed to send him to university
A:lacked B:lacking of
C:lacking D:lacked in
为什么这两题都是缺少的意思,但是选择答案却不一样.

你查字典了吗?lack有两种词性：名词和动词.
第一题中“因为缺氧”.because of 后面接名词（lack用作名词,不可数）
第二题中“虽然缺钱”是把lack用作动词
所以答案不一样.

a couple的用法? 【跪求】lack of 和 a lack of的用法, lack的用法请问a lack of、be lacking in和lack for用法上有什么区别? lack 的用法a lack of、be lacking in和lack for用法上有什么区别吗?尤其是lack of couple用法例句?couple of 后面的谓语用单还是复数?a couple of things 和a coup 英语翻译a.after b.when c.since d.before和 because of 与 because的用法英语中Lack的用法请问lack,a lack of,be lacking in这3个词有什么区别.我知道lack可以做英语翻译the couple died in the earthquake ,leavingtheir children 这句话中为何不用lack的ing形式?Throw in a couple of weepy one-liners大神们帮求couple的意思,用法, 英语翻译She showed a lack of ____ （judge）when she gave Mark the lack,lack in,lack for 的用法区别,三个都是动词,