When , the museum will be open to the public next year. A．completed B．completing
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When ________, themuseum will be open to the public next year.
A．completed
B．completing
C．beingcompleted
D．to becompleted
试题答案
答案：A
解析：complete和museum是动宾关系，要用过去分词completed作状语，表示被动。句意：当这座博物馆建成后，将在明年向公众开放。to be completed作目的状语，不与when连用。
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