问题
选择题
Be careful when you go ____ the street because the traffic
is very busy at the moment.
A．across
B．behind
C．between
D．over
答案
答案：A
考察介词。across表示从事物的表面通过。Behind在后面；between在中间；over在上面，超过。句意；因为此刻交通很繁忙，但你横穿马路时，加小心。结合语境可知选A。