---The girl is practicing English, ___________?---Yes, she is. She is good at English.

— ____ is your mother?— She is in the kitchen.

— Can’t you act like a gentleman?— ________. A gentleman can’t buy the nice and cheap things among such a group of crazy women.

— Must I come at four o’clock?— Oh, no, you ____.

---I’ll do the washing-up. Jack, would you please do the floors?--_______.