–Shall we go shopping now?--Sorry. It is not the right _______. I am too tired.
—Mom, where is my schoolbag? —______. Is it under the bed?
—____________? —They're fine, thank you.
—Is this your bicycle, David? —No, it's not . It's Helen's.
— Your English is very good. —____________.
— ________, where is my pencil? — ________, I don’t know.