( ) These are ______. You can buy a pair for your mother.
A: I've got a new scarf. B: ________ .
A : It's seven. B : ________
A: Do you like the skirt? B: ________ .
A: I go to bed at ________ . B: It's too late. Go to bed at ________ .
A : My son is hungry. B : ________ .