________ they ________ a cow yesterday?
—What color is your pen?—It’s .A、black B、a blue C、a yellow pencil
—Are the keys yellow?— .A、Yes, it is B、No, they aren’t C、Yes, she is
Look! Here my English books.A、is B、are C、am
My aunt’s son is my .A、cousin B、brother C、uncle
—What’s your telephone number?— 629-4382.A、It’s B、They’re C、I’m