—What’s up? You look down.

—I have piles of papers _______ , but I type so slowly.

A. to be typed                                                  B. typed

C. to type                                                               D. being typed

    —What’s up? You look down.

—I have piles of papers ______, but I type so slowly.

—What’s up? You look down.  —I have piles of papers ________, but I type so slowly.

—What’s up? You look down. 

—I have piles of papers ______, but I type so slowly.

1. A.
   to be typed
2. B.
   typed
3. C.
   to type
4. D.
   being typed

 —What’s up? You look down.  —I have piles of papers ________, but I type so slowly.

A. to be typed        B. typed                       C. to type                                   D. being typed