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Perfect Infinitives with modal verbs
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Use commas to add multiple tags

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Delimiter between question and answer:

Tips:

  • No column headers.
  • Each line maps to a question.
  • If the delimiter is used in a question, the question should be surrounded by double quotes: "My, question","My, answer"
  • The first answer in the multiple choice question must be the correct answer.






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She is unlikely to oversleep. She is never late.
She can't have overslept. She is never late
Perhaps she didn't know about that.
She may not have known about that.
I'm sure he hurt the muscle while playing.
I guess I must have hurt the muscle while playing.
It was better if you did it previously.
You should have done it previously.
It wasn't necessary for us to be present all the time.
We needn't have been present all the time
There's a slight chance that they went away
They might have gone away already.