单项选择 My mother is __a cake.A.making B.make C.makes.

单项选择 My mother is __a cake.A.making B.make C.makes.
单项选择 My mother is __a cake.A.making B.make C.makes.

单项选择 My mother is __a cake.A.making B.make C.makes.
选择A be doing 现在进行时 意思是：我母亲正在做一块蛋糕 谢谢您的支持!