改为同义句:1.Be careful!Don't cross yet.

don't be sad.(改为同义句) Be careful Don't be late foe school!的同义句 Don't be afraid of making mistakes改为同义句 改为同义句：Don't be late for class don"t be worried about him (改为同义句） Be careful.同义句、 Be careful,don't drink that coffee yet,it's red hot!帮我翻译一下, Don't cross the road.改成同义句 you must be careful when you cross the street.(同义句) I can't cross the river.(改为同义句) I haven't received his letter yet.改为同义句 They haven't found anything yet.(改为同义句)