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"
