A. isn`t

　　B.wasn`t

　　C.weren`t

　　8 Yesterday, Amy ______her mum cook.

　　A helped

　　B will help

　　C is helping

　　9 Next week(下周) , Sam and Daming ______ for a bike.

　　A went

　　B is going

　　C will go

　　10 Did you ______ a watermelon yesterday?

　　A had

　　B buy

　　C bought

　　三、判断，对"√"，错"X"