(   )1. A. Chinese is as useful as math.

      B. Chinese is more useful than math.

      C. Chinese is not so useful as math.

      D. Chinese and math are not useful enough.

(   ) 2. A. David and Bob don't finish his homework.

       B. David and Bob have finished his homework.

       C. David and Bob can finish their homework.

       D. David has to finish their homework, so does Bob.