问题
选择题
Lin Tao has returned from the UK recently. He ______ at Cambridge for four years, during which we ______ with each other on the Internet.
A．has studied; has communicated
B．had studied; communicated
C．studied; had communicated
D．studied; communicated
答案
答案：D
题目分析：考查时态：句意：林宝2最近从美国回来了，他在剑桥大学学习了4年，期间我们经常在网上交流。因为他已经从英国回来了，在剑桥学习4年是过去的四年，我们在网上交流也是过去的动作，选D。