【評論主題】28. When the teacher put his finger on his lips, it was a _______ for his students to be quiet.(A) s

【評論內容】Slopen1 [C] a piece of ground or a surface that slopes 斜坡，斜面:Paraden [C]1 a public celebration when musical bands, brightly decorated vehicles etc move down the street〔慶祝〕遊行; 列隊行進

【評論主題】28. When the teacher put his finger on his lips, it was a _______ for his students to be quiet.(A) s

【評論內容】Slopen1 [C] a piece of ground or a surface that slopes 斜坡，斜面:Paraden [C]1 a public celebration when musical bands, brightly decorated vehicles etc move down the street〔慶祝〕遊行; 列隊行進

【評論主題】38. I thought we might go for a drive ______ Sunday.
(A)on(B)in(C)at(D)of

【評論內容】"in + 一段時間" 表『在一段時間之後』，相當於『一段時間 + later』，亦可表『在一段時間之內』，此時 in 相當於 within。On 與『日子』並用。