填空:When[ ](complete),the museum will be open to the public next year.

问题描述:

填空:When[ ](complete),the museum will be open to the public next year.

complete or completed.

When [completed], the museum will be open to the public next year.

When completed,the museum will be open to the public next year.
过去分词做状语,与后面的museum是逻辑主谓关系,用过去分词表被动意义。相当于:
When (it is)completed,the museum will be open to the public next year.

When it complete, the museum will be open to the public next year.

When [complete],the museum will be open to the public next year.
竣工后博物馆将于明年向公众开放.