lack ,lack in ,lack of有什么区别比如说Though_____money,his parents managed to send him to university.A.lacked B.lacking of C.lacking D.lacked in

lack [læk] n.缺乏, 无 v.缺乏, 不足 （在句子中单独出现的比较少，一般是以词组形式出现）
lack in
v. 在 ... 方面缺乏
例句:
Lacking in harmony.
不协调的; 不和谐的
Critics have found them to be somewhat lacking in emotional depth; skirting round problems rather than meeting them head on.
批评家们觉得他们情感浓度有所不够。他们是在回避问题而不是正视问题。
lack of 缺乏 （后面一般接名词）
例句:
The flowers are wilting for lack of water.
这些花因缺水而渐渐枯萎。
Her decision seems to show a lack of political judgment.
她的决定似乎显示出缺乏政治判断力。
The lack of rain aggravated the already serious shortage of food.
干旱少雨使原本就很严重的粮食短缺问题更加严重。

你记住这个就可以,lack既可以是动词,也可以是名词.
动词时,为及物的,所以直接加名词,就是 lack+ sth...就是缺乏什么什么.
They lack money.
名词时,一般用这个词组 a lack of sth.意思也是缺什么.
eg.There is a lack of water in that city.
lacking 是一个形容词,用法为 lacking in sth..
既然是形容词,就是需要它前面加系动词才可以用,或者直接用一个短语.
eg. He got refused because of being lacking in experience.
同一个意思的句子用这三个形式我在给你举个例子：
他缺乏经验.
He lacks experience.
He has a lack of experience.
He is lacking in experience.