问题
选择题
—Have you been to the United States?
—Yes, only once. I ________ there only for seven days.
A．stayed
B．had stayed
C．have stayed
D．was staying
答案
答案：A
考查动词的时态。据句子 Have you been to the United States? Yes, only once.我去过美国，但已经回来，所以I ________ there only for seven days是过去的事，所以应用一般过去时态。选A。