We’d better _____ the street when the traffic lights are red.
A. cross B. not across C. not cross D. across
We’d better _____ the street when the traffic lights are red.
A. cross B. not across C. not cross D. across
C had better (not) do sth.“最好(不)做某事”;cross the street“过马路”。红灯亮时最好不要过马路,故选C。