[ Conditional Sentences ]
Phillip forgot to bring his passport. He couldn’t get on the plane.
A. Phillip wishes he hadn’t brought his passport so that he could have got on the plane.
B. If Phillip had remembered to bring his passport, he could have got on the plane.
C. Provided that Phillip had remembered to bring his passport, he could get on the plane.
D. Unless Phillip had forgotten to bring his passport, he can have got on the plane.

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