_______book on the desk is_____useful one A The;an B A;a C The;a D The;X

问题描述:

_______book on the desk is_____useful one A The;an B A;a C The;a D The;X

C

C The;a
第一个book 是特指的,在桌子上的书,用the
第一个无特指,用a

C.
The book 特指“桌上那本书”
用a,因为useful发音时 /ju:/

The book on the desk is a useful one.