问题
选择题
His grandfather and grandmother _____Chongqing for 40 years. They like living there.
A．have been in
B．have been to
C．have gone to
D．have moved to
答案
答案：A
本题意思是他的爷爷奶奶已经在重庆呆了四十年，谓语动词应是持续性动词，从时间状语来看，本题为现在完成时态，所以选A。