单项选择题
Fluency in English（）my grandmother for a teaching job in her twenties.
A.was qualifiedB.has been qualifyC.qualifiedD.has qualified
单项选择题 I paid him a visit. I（）.
单项选择题 We have an old musical instrument （）a clavichord.
单项选择题 How brief should a handshake be？（）
