【题目】—Haven't seen you for ages! Where have you been?
—I went to Ningxia and ________ there for one year, teaching as a volunteer.
A.stayed
B.have stayed
C.had stayed
D.am staying

【答案】A
【解析】考查动词的时态。句意：“很久没有见到你了！你去哪里了？”“我去了宁夏，在那里支教了一年。”根据句意可知，stay的动作发生在过去，故用一般过去时。