问题
选择题
Before you leave the classroom, you must _____ the door and _____ the lights. [ ]
A. close, close
B. turn off, turn off
C. close, turn off
D. turn off, close
答案
答案：C
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Before you leave the classroom, you must _____ the door and _____ the lights. [ ]
A. close, close
B. turn off, turn off
C. close, turn off
D. turn off, close
答案：C