You must be careful to c___ the street.
you must be careful when you ( )the street
You must be careful when crossing the street.改为祈使句
while___(cross)the street,you must be careful
If there___on the street,you must be more careful to cross i
when crossing street,you must be careful
You must be careful when you cross the street.改为祈使句
you must be careful when you cross the street.(同义句)
you must be careful when you cross the street中可以用if替代when吗
Be careful when you c_______ the street
You are always so c___.You must be careful next time.
you must be careful
while walking in the street ,you have to be very careful to