Managers, professors or co-workers may be good references because they care about your

A. To train the international graduates to be T-A’s.
B. To make sure students can understand the Foreign T-A’s.
C. To help their students improve their spoken English.
D. To offer to those who failed to take it outside the U.S.

A. It needs to be preserved until reprints come out.
B. It is the only copy of the kind and must be kept intact.
C. It is the professor’s own book put in the library.
D. It needs to be read by every one of the class.