After seemed a long time, they finally arrived at the destination.
A. what
B. it
C. that
D. which
网友回答
A. what
B. it
C. that
D. which
解析：考查宾语从句。本题的ｗhat引导宾语从句what seemed s long time在句中做主语。It不能引导宾语从句。That在宾语从句中不充当任何成分，which指特定范围之内的某一个。句意：似乎过了很长的一段时间以后，他们终于到达了目的地。故A正确。