题目

高一定语从句,4道选择题,在线求帮助.
he is a man of great knowledge,__much can be learned.
a.in hom .b.about whom .c.from whom. d .of whom.
先行词是PERSON,用介词+WHOM.以上都是此形式,为什么选D呢?
please pass me the dictionary__cover is black.
a.which. b.its. c.whose. d. which of .
先行词是物,那不是用WHICH,THAT,WHOSE都行么?
is oxygen the only gas__helps fire burn?
a.that .b./ c.which .d.what.
求详细解答,定语从句好乱啊!

提问时间：2020-12-18

答案