问题

. I have taught hundreds of students,___________ having been working in their fields for years.

A:some of whom
B:some of them
C:most of whom
D:who

正确答案是：

同类题型

I have never been to Beijing, but it is the place _____

xt morning she found the man___________ in bed, dead

ou heard of it Firefighters rushed into aburning house, three of them unfortunatelyin and theirlives.

The pilot asked all the passengers on board to remain _____ as the plane was landing [ ]

Mary is ill today. If she _____, she ____ here at school