当你看见远处有一件夹克衫时,你会说:A. What’s a jacket. B. That’s a jacket. C. This is a jacket.
--Can you make the bed ?--Sorry ,I________.
Is this ________ bedroom?
There ________a pencil and two pens in my pencils -case.
This is a picture ________my family.
Are there any ________in the mountain?