问题
选择题
He _______ English for four years before he went abroad.
A．has studied
B．was studying
C．has been studying
D．had been studying
答案
答案：D
题目分析：考查时态。根据句意：在他出国之前已经学习了四年的英语。可知，学英语的动作发生在出国之前，而且现在出国依然在学，因此用过去完成进行时。所以答案选D。
