Question

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

Answer 1

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。