Cola was originally sold in （）

A. more and more fresh water is used by farmers for their crops
B. the amount of fresh water that can be used for crops decreases
C. the earth will become warmer and warmer
D. the ability to use fresh water sources becomes restricted

A. The man told her.
B. She used to attend Professor Smith’s class.
C. She is a friend of Professor Smith’s.
D. Many students ask for articles of the course.