What’s wrong with him? I haven’t seen him _____ last Wednesday.
A. on     B. since     C. by

  ---I’m not sure_____ Mr. Wang goes to see his parents ---Twice a week.
A. how long     B. how often     C. how soo

The camera is_______ expensive_______ I can’t afford it.

He said that he was attacked with a knife and bled to________ .

There ______a number of books in our school library. The number of books________getting larger than last year.

She found _____ very interesting _______ around Guilin.

— Which of these two dresses _______, the pink one or the red one, Madam?
— Neither, thanks. I _______ take a look at a light green one.

---____are your pants?
---Ninety-nine dollars.

—What would you like?
—I’d like ____ orange juice, please.
A. a    B. an   C. a glass of

—____ is the letter from?
—It’s from Mike, my pen pal.
A.Where   B. How   C. Who