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.The artist made up his mind to devote all he could ____his English before
going abraod. 
A．improvingB．to improveC．imprveD．to improving
D
考查不定式做目的狀語，句意是：這個藝術(shù)家決定在出國前盡最大力量提高英語，to improve…為了提高。是目的狀語。選D。
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