问题
He served in the army in ______ when he was in _______.
A:1940’s, his twenties
B:1940’s , the twenties
C:the 1940’s, his twenties
D:the 1940’s, the twenties;
B:1940’s , the twenties
C:the 1940’s, his twenties
D:the 1940’s, the twenties;
正确答案是：
