—May I get eraser, Mum? —Yes, you may.
I haven’t got ________ cola.I think Ann has got ________.
I often go swimming with my father______Sunday.
Betty is in front of me,so I am ________Betty.
There’s______old pencil on the book. The pencil is _____pencil.
--_______students are there in your class,Mr Li? --Fifty.