Mary has a bad cold. She has to stay in ______ bed.
A. a                            B. the              C. / 

Jane is ______ active girl, and she always like playing _____ baseball after school.
A. a; the       B. an; the           C. an; / 

There is      “u”and          “l” in the word “ruler”.

Look at _______eraser on the desk.Whose is it?
A.a                 B.an               C.the

Sandy likes playing _______ badminton after _______ dinner.

There  is _______ “i”  in the word i phone  .  

Why not take_______ umbrella with the sign "Made in china"? It is_______ useful one.

There is _____ river at the foot of the mountain(山). _____ river is dangerous.

I have ________ apple. It's red. 

---- Can you take photos with elephants?
---- Certainly. ______ elephant is ______ useful animal. I like them.