"Could you help me with my lessons?""Yes I can."中为什么不能用could

"Could you help me with my lessons?""Yes I can."中为什么不能用could "Could you help me with my lessons?""Yes I can."中为什么不能用cond --Could you help me with my homework?--________ A.Yes,I can. help me my could lessons you with连词组句 1.---Could you help me,please?---A.Yes,I could.B.Yes,I can.我 Can you help me with my Chinese?Could you tell --could you help me?--yes,I Can you help me with my lessons? Could you help me carry the box?B.Yes,l could.C.No,I can't. help me my could lessons you with（?）连词成句 help,me,my,could,lesson,you,with(?) "Can you help me with my lessons after school?" "Yes,I____."