句型：Can you help me...? 及回答 — 英语词汇题

根据提示，从方框中选出合适的回答填空，每项限用一次。方框：Yes, I can.　Sorry, I can't now.　No, thank you. At home, Lucy is free. Jack is doing his homework and can't stop now. Mum: Can you help me clean the room, Lucy? Lucy: ______ Mum: Can you help me wash the cups, Jack? Jack: ______