—Simon, I wonder .
—Last Saturday.
A. when the foreign visitors arrived
B. when did the foreign visitors arrive
C. when the foreign visitors will arrive
D. when will the foreign visitors arrive
网友回答
(答案→)A. when the foreign visitors arrived
B. when did the foreign visitors arrive
C. when the foreign visitors will arrive
D. when will the foreign visitors arrive
解析：由答语可知这件事情发生在过去，且宾语从句要用陈述句语序，故选A。