A. careful B. lost and found office C. delinquency D. spring A. dismiss B. audience C. front D. the A. arbitrary B. representative C. homework D. air conditioner A. bookcase B. switch on C. can't D. closed A. silt B. roller skating C. dish D. hand in A. comfortably B. test out C. work D. give sb a ride A. favourite B. liquid C. move D. dilemma A. recording B. the Terracotta Army C. hard D. ago A. kung fu B. laundry C. bookstore D. flower A. dramatically B. vase C. bell D. regulation