Homework __________ on time will lead to better grades.
（A）done
（B）be done
（C）having done
（D）having been done
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更多大学英语选择题200道试题
- 1In the geography class, the teacher explained wind and water might cause soil ____________.
- 2Unless he is ________ intense love, he hardly ever looks into someone else's eyes for very long.
- 3The price they offered for my old car was so low that I _________ it down.
- 4Jessica ____________ her father on the knee and asked him not to worry about his health.
- 5__________ a teacher in a university, it is necessary to have at least a Master's degree.
