問題詳情:
Passengers ________ talk to the driver while the bus is moving, because it will take his focus off the road.
【回答】
mustn't 句意:當公共汽車開動時,乘客不得與司機交談,因為這將把他的注意力從路上轉移開來。此處表示“禁止,不允許”,故用mustn't。
知識點:虛擬語氣
題型:閲讀填空