问题
选择题
Not only his parents but also his brother to the Summer Palace. They haven’t been back.
A．have been
B．have gone
C．has been
D．has gone
答案
答案：D
D Not only …but also…遵循“就近原则”，即连接两个主语时，谓语动词的单复数与最近的主语一致。本句与his brother一致，因为去了颐和园还没回来，故用has gone。