( ) Where _____ you come from ? A. do B. are C. is
What the elephant doing? A. is B. are C. am
The horse is .A. run B. running C. running
Daming and Sam playing football. A. is B. are C. am
What Sam and Amy doing? A. is B. are C. am
We can see interesting things. A. lot of B. a lots of C. lots of