题目内容
-I heard your grandpa used to be a teacher.
-Yes.He was a math teacher ________.
[ ]
A.on the 1950s
B.in the 1950s
C.at the 1950's
D.in 1950's
答案:B
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题目内容
-I heard your grandpa used to be a teacher.
-Yes.He was a math teacher ________.
A.on the 1950s
B.in the 1950s
C.at the 1950's
D.in 1950's