Be careful when you promise to others ,you must keep it．If y

Be careful when you promise to others ,you must keep it．If y want/if/keep/to/must/take care of/you/you/promise/a/pet/it连词 you must be careful when you cross the street中可以用if替代when吗 when crossing street,you must be careful You must be careful to c_the road.It's dangerous. You must always be careful with it . you must be careful If you want to be a Friend of the Earth,you must promise the If you go to the forest,you must be careful,or dangerous ani you must be careful when you ___ with fireworks you must be careful when you （ ）the street If there___on the street,you must be more careful to cross i