窗口將在 5秒后自動關閉.
master
vt.
她學會了控制自己不發火。
俄語是門難以精通的語言。
以上來源於:《英漢大辭典》
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單選題
In order to master English, __ doesn't tell so much as diligence. The key to mastering English is to study hard.
(A) concentration
(B) intelligence
(C) annoyance
(D) suffering