The shop at 8:00 a.m. and it for ten hours every day.
A. opens; is open
B. is opened; opens
C. is open; has opened
D. opened; opens
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(答案→)A. opens; is open
B. is opened; opens
C. is open; has opened
D. opened; opens
解析：A 考查单词词性。Open用做动词表示“开”的动作，用做形容词表示“开着，营业”的状态。“商店8点开门，每天营业10个小时。”故选A。