Look!Thetrafficlighthasturnedred.We

問題詳情：

Look! The traffic light has turned ________ stop our car.

A．can  B．can't  C．must  D．mustn't　

【回答】

C　由前句“The traffic light has turned red.”及常識可知，紅燈亮了，必須停車。故選C。

知識點：情態動詞

題型：選擇題