问题
选择题
The book, ___________ is green, has been lent to my brother.
A．of which cover
B．the cover of which
C．whose covers
D．its cover
答案
答案：B
考查定语从句。定语从句the cover of which is green修饰先行词The book；A应该改为of which the cover; C应该改为whose cover; D应该改为whose cover;