The time he has devoted in the past years _______ the homeless is now considered _________ of great value.
A．to help; beingB．to helping; to beC．to help; to beD．helping; being
B

試題分析：句意：在過去幾年，他投入到幫助無家可歸的人上的時間現(xiàn)在被認為是很有價值的。第一空填to helping，使用了詞組“devote time to doing”花時間做…，第二空填to be，使用的是consider …to be“認為…是什么”，所以選B。
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