A-A+
When __ the museum will be open to the public
问题详情
When __,the museum will be open to the public next year. A．completed B．completing C．being completed D．to be completed
参考答案
正确答案：A
此题考查的是过去分词充当时间状语的用法。when completed可以还原成when it is completed。
考点：
