请你从方框中选择合适的选项完成对话, 并将其字母标号填在相应的横线上。( Mum: M  Tony: T )

T : Could I invite my friends to my birthday party on Saturday, Mum?
M: 1____________________
T :2____________________
M: What for?
T :3____________________
M: Well, I am shopping tomorrow. And I can buy drinks
and snacks for you.
T : Oh, good. Thank you, Mum.
M:4____________________
T : I cleaned it last week.
M: But you need to clean it again for your party.
T :5____________________
M: Then after you finish your homework, let’s clean the room.

-- Could I invite my friends to my birthday party?   -- Sorry, you _________.

A．can              B．can’t            C．could             D．couldn’t

—Could I invite my friends to my birthday party?—Sorry, you ______.

A．can              B．can’t            C．could             D．couldn’t

-- Could I invite my friends to my birthday party?   -- Sorry, you _________.