---- Is that pen? ----- No, It is eraser.A. a; a B. a; an C. /;an
— What color is it? — ________.
— ________ my baseball? — It’s under the chair.
___ the morning of June 25, they visited the factory. In B. On C. At D. From
– When are you leaving for the concert? --I’m not sure. I haven’t finished ____ the dishes.
-- Must I come here at eight o’clock? -No, you ____. You may come a little later.