The ground is wet; it _______ last night.
（A）might have been raining
（B）can have rained
（C）should have rained
（D）must have rained
参考答案
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更多大学英语单项选择题库试题
- 1Which of the following is NOT a result of the land-grant acts of the 1850’s?
- 2Home-made parts are being ________ for imported ones
- 3The phrase "put yourself in their shoes" in paragraph 4 is closest in meaning to___________.
- 4It was not tom’s ______that he was late for school, because he was delayed by a traffic accident.
- 5I could not have fulfilled the task in time if it _______ for your help.
