25. There’s plenty of time, so you ______ worry about it.

A. needn’t B. couldn’t C. mustn’t D. wouldn’t

26. The light was so ______ that I had to cover my eyes.

A. bright B. weak C. soft D. natural

27. Spring is by far _______ time to visit the island.

A. the better B. better C. the best D. best

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