be rich in sth这里的rich是什么词性?

be rich in sth这里的rich是什么词性? a place rich in sth.还是 a place be rich in sth. 翻译：China is rich in natural resources.有finish to do sth的用法吗？ be lost in sth succeed in doing sth.这里的in能不能省略? Mr.Smith is very strict in everything with his student.这里用的短语是be strict in sth 还是be strict with sb?为什么? be rich with/ of/ in 区别 be rich with/ of/ in 区别 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 rich in /be short of 的具体用法.2到3个例句就好^-^ be rich in和be high in的区别the mountain village is ____ in fruit,which is ____ in fat.a.high,poorb.rich,poorc.high,lowd.rich,low be useful to do sth 与be useful in doing sth的区别最好带有例句. be adj to do sth是不是和be adj in doing sth是一样的? be interested in doing sth be busy in doing sth be long in doing sth be behind in doing sth be sophisticated in doing sth