Thenoticeonthewallismeantto

問題詳情：

The notice on the wall is meant to ________ the unwanted visitors, especially during working hours.　

A. keep up                              B. keep off

C. keep from                            D. keep back

【回答】

B　keep up“維持；繼續”； keep off“離開；使不接近”； keep from“阻止；使免於”； keep back“阻擋；抑制”。根據句意，B項最佳。

知識點：動詞

題型：選擇題