The policeman orded me to ( ) the road at the zebra crossing,括号处改填through还是across?

问题描述:

The policeman orded me to ( ) the road at the zebra crossing,括号处改填through还是across?
我觉得该填across,可是答案是through.

to是不定式符号,后面应该接动词cross,而 through是介词,因此答案是错误的