Question

In __ ,when he was in __ ,he went abroad to study in

In __ ,when he was in __ ,he went abroad to study in America.
A the 1980s;his twenties
B 1980s;the twenties
C the 1980s;the twenties
D 1980s; his twenties

Answer 1

正确选项D 1980s; his twenties

in 1980's 在20世纪80年代，固定表达方式, 例如：in 1860s 在19世纪60年代；in his twenties 在他20来岁的时候，也是固定表达，例如：在某人50来岁时 in one's fifties.

Answer 2

A
in the 1980s 在二十世纪八十年代
in one's twenties 在某人二十几岁的时候

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