2. 专升本
  3. I didn’t hand in my design work yesterday, but I________.

I didn’t hand in my design work yesterday, but I________.

admin2021-06-28  13
问题 I didn’t hand in my design work yesterday, but I________.
选项 A、should do
B、must have done
C、should have done
D、could have done
答案C
解析 should应该，表示责任或义务；could能够，常表示能力；should have done本应该做(而实际上没有做)；must have done表示对过去发生事情的肯定推测，意为“一定做了……”；could have done本能够做(而实际上没有做)。根据句意可知，选C。注意，此处为避免重复，用do来代替上文的hand in my design work，should have done相当于should have handed it in。
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