When you ____ others,you should say sorry at once.A,knock to

When you ____ others,you should say sorry at once.A,knock to If you someone,you should say “I’m sorry”.A.knock at B.knock You should say ____ to others when you see them. It's polite to say sorry when you knock into someone careles When someone says "1'm sorry"to you,you say"____" A.No probl You should say sorry to others.这句other前面用介词to对吗 When you break other's things,you should say'sorry'to him. when you (be after)for class ,you should say sorry to the te Please ____(knock)at the door when you come in. --You should say sorry to her.--____.But it is difficult for when you go to bed at night ,you should say to your parents' You should a doctor at once