关于短语be lacking in1.be lacking in 中的lack什么词性?2.这是表示进行时吗?

关于短语be lacking in1.be lacking in 中的lack什么词性?2.这是表示进行时吗? Because of ----construction material the project had to be put off A lacking of B lacking be lacking in life be lacking in,lack词性? lack相关短语的区别,be lack of,be lacking in ,lack sth,a lack of sth,等等并造句,如果还有其他相关短语,也请列出, be lacking sth 和be lack in sth的区别?例：Though ______ money,the poor couple managed to send their son to college .A lacking in B lacking这里省掉了从句的主语和系动词 he was. be lacking in the sense of security It will be accumulated and paid you in1 lump sum. 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可以做动词和名词.a lack of是个名词词组,并且a可以省略.be lacking in是动词短语.它们3个的用法到底该怎么用.比如:1;Those ____confidence led to his failure in the interviewA.Lacking in B.Lacking 请问lack,lack for,be lacking for有什么区别? be lacking in怎么用啊能不能给个例句 It was order that tickets _ given free to those lacking money to buy them.A.were B.have been C.be D.are 英语词类辨析There must be no life onthe Mars for _____ of air there.A .lack B.lacking C.short D .empty为什么选A呢？ 短语填空和c短语填空hear of, all the time, be born, classical music, now and then, learn to play, prefer to, live in1.Snakes ( ) cool weather ( ) hot weather.2.We human beings need the air( ).3.None of us has ever ( )kinds of things.4.Man 至少25个关于“ be+形容词+介词”结构的短语 Though____money,his parents managed to send him to go abroad.A.lacked B.lacking of C.lacking D.lacked in _____ for a long time,most of the crops in this area died from lacking water.A.Being no rain B._____ for a long time,most of the crops in this area died from lacking water.A.Being no rain B.There was no rainC.To be no rain D.There being no rainthere