Question

There are many boys playing basketball on the playground, ________ are Senior 3

There are many boys playing basketball on the playground, ________ are Senior 3 students．
A. most of them
B. most of who
C. most of whom
D. they

Answer 1

答案C
做本题时应注意到标点符号的使用，逗号引出的句子没有连词，所以该空必须填连词，因此不能选A和D项，选项B中的连词who不能与介词连用。