–Do you know the Capital Museum? –Next Friday.A. when will they visitB. when they will vi

问题补充：

–Do you know the Capital Museum? –Next Friday.

A. when will they visit

B. when they will visit

C. when did they visit

D. when they visited

答案：

A. when will they visit

(答案→)B. when they will visit

C. when did they visit

D. when they visited

解析：句意：--你知道他们什么时候参观首都博物馆吗？--下周五。宾语从句，从句部分要用陈述句语序。根据答语可以判断是将来时态。故选B.