问题
Tom became a soldier in _________. He was in ________ at that time.
A:1990’s; twenties
B:the 1990’s; his twenties
C:the 1990’s; the twenties
D:1990’s; the twenties;
B:the 1990’s; his twenties
C:the 1990’s; the twenties
D:1990’s; the twenties;
正确答案是：
