问题补充:
—Do you know the Capital Museum?
—Next Saturday.
A. when will they visit
B. when did they visit
C. when they visited
D. when they will visit
答案:
A. when will they visit
B. when did they visit
C. when they visited
(答案→)D. when they will visit
解析:根据句子的结构,本句应该是一个宾语从句。而宾语从句要用陈述句语序,故排除AB;根据答语Next Saturday可知,本句应将来时。所以本题选D。