题目内容
In ____, he began to learn Russian, when he was in ______.
A. 1970; the 50’s B. the 1970; his 50s
C. the 1970s; his fifties D. 1970s; his fifties
In ________ he began to learn Spanish, when he was in ________.
A. 1970: 40’s B. the 1970: his 40 C. the 1970s; his forties D. 1970; his forties