单选题 An accident ____ on this road last week.
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单选题 Cotton ____ in the southeast of China.
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单选题 A talk on Chinese history _____ in the school hall next week.
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单选题 Mathematics is the subject _______.
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单选题 The dictionary ______ is now out of stock.
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单选题 She studied hard at school when she was young, ______ contributes to her success in her career.
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单选题 _____ a new library _____ in our school last year?
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单选题 The reason ___ I can’t come is that I have to prepare for the coming exam.
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单选题 So far, the moon ____ by man already.
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