Question

The mother along with her children _______  in the supermarket when the explosion happened.

A．was shopping

B．were shopping

C．have been shopping

D．had shopped

Answer 1

 A

 
试题分析：考查主谓一致和固定句型。固定句型be doing sth when…正在做某事在这时发生了意料之外的事情；故使用进行时，另外本题的主语是The mother along with her children，谓语动词应该与the mother保持一致，使用单数形式。故A正确。
点评：。固定句型be doing sth when…正在做某事在这时发生了意料之外的事情；当名词和along with…做主语的时候，谓语动词与第一个名词保持一致。