Question

—Are your parents at home?
—No, they aren’t in. They _________ to Beijing.

A．has gone

B．have gone

C．has been

D．have been

Answer 1

B 

            
试题分析: 句意：你父母在家吗？不，他们不在家。他们已经去北京了。 Have been to ,曾去过某处但已经回来了，hasve gone to 去某处还没回来，可知答案选B。