问题补充：
Its cold today. The window is . Joan, go and it, please.
A. closed, open
B. open, close
C. close, open
D. open, closes
答案：
A. closed, open
(答案→)B. open, close
C. close, open
D. open, closes
解析：
试题分析: 句意：今天冷，窗户开着呢，琼，请去把窗户关上。close 关（动词），closed关着的（形容词）；open打开（及物动词），开着的（形容词）。根据Its cold today.今天冷，可知是去关上开着的窗户；祈使用谓语动词用原形，故选B
