Question

– Why did they help Mrs Brown with her work?
– Because she was _____.

A．an old friend of them	B．the friend of them
C．a the their friend	D．a good friend of theirs

Answer 1

D

试题分析：句意：为什么他们帮助布朗夫人做她的工作？因为她是他们的一位朋友。a good friend of theirs="one" of their good friends他们的一位好朋友，所以选D。