... who 12 . He ____ a principal of our school since last January.A. is B. was C. has been D. had been 13 . The First World War _____ in 19 18.A. had ended B. has ended C. ended D. as ending 14 . The ... accurate C. accurately D. exact 10 . CPU stands for __________.A. centre process unit B. central process unitC. central processing unit D. centre processing unit 11 . This is the school ___________ ... request 21 . She always ________ from ill health.A. suffers B. enjoys C. feels D. differsChoose the underlined part that is pronounced differently from the other ones. 22 . A. machines B. places C. languages...