It's best for you to cross the steet carefully.改同义句

问题描述:

It's best for you to cross the steet carefully.改同义句
It's best for you to cross the steet carefully.
you____ ____cross the sreet carefully(改为同义句)

It's best for you to cross the steet carefully.
you (had) (better) cross the sreet carefully(改为同义句)
had better do sth.最好做某事.