Rewrite the sentence as required so that it has the similar meaning to the given one
I could never have passed that exam without working hard.
(Write a conditional sentence)
This is the first time I have ever drunk rum.
(Use the inversion structure)
They took shelter under a tree because they were driven by the rain.
(Use a participle structure)
He locked the door to prevent the prisoner escaping.
(Use an adverb clause of purpose)
