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ask
sell sold sold
I asked the price of the car, but they had already sold it.
run, ran, run
leave, left, left
platform 站臺(tái)
The day before yesterday, I ran to the platform quickly, but the train had already left.
go, went, gone
finish, finished
She had finished the housework before she went out.
go on holiday 度假
take the exam 考試
go, went, gone
take, took, taken
She went on the holiday after she had taken the exam.