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IELTS Vocabulary Online Quiz
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The movement of the Rongbuk glacier caused the valley to _______.
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A
erode
💡 Explanation:
The structure 'caused [something] to' must be followed by the base form of a verb. 'Erode' is the correct verb form here. 'Erosion' and 'evaporation' are nouns, and 'evaporate' does not make sense in the context of a valley and a glacier.