10. Mary demanded that he _____ the books he borrowed from her a month ago.
A、 return
B、would return
C、 returned
D、had returned
16. The company has 80 staff members,_____15 foreign experts.
A、not to count
B、not counted
C、having not counted
D、not counting
I . Phonetics( 5 points)Directions:In each of the following groups of words, there are four underlined letters or letter combinations marked A, B, C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation. Mark your answer by blackening the corresponding letter on the Answer Sheet.1.( )