問題詳情

20.In 1951, ___ he was eighteen, he wrote his first song. Now he is a famous music composer.
(A) who
(B) when
(C) where
(D) how

參考答案

答案:B
難度:簡單0.833333
統計:A(6),B(50),C(4),D(0),E(0)

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