16.Choose the best answer: They use milk for making butter and cheese. A. Milk were used for making butter and cheese. B. Milk are used for making butter and cheese. C. Milk was used for making butter and cheese. D. Milk is used for making butter and cheese. (0.5 Points) A B C D 17.She has taught English here ………………………… 10 years. A. in B. since C. at D. for (0.5 Points) A B C D

They use milk for making butter and cheese.
A. Milk were used for making butter and cheese.
B. Milk are used for making butter and cheese.
C. Milk was used for making butter and cheese.
D. Milk is used for making butter and cheese.

17.She has taught English here ………………………… 10 years.
A. in
B. since
C. at
D. for