Earthquake damage has caused some of the communications networks to shut down __

游客2025-06-15 3

问题 Earthquake damage has caused some of the communications networks to shut down ______until essential repairs are carried out.

选项 A、complete
B、completely
C、completeness
D、completion

答案 B

解析 shut down是表示“中断或停止经营”的不及物动词词组，且until essential repairs arecarried out是状语从句，因此横线处应填入修饰动词的副词。答案是(B)completely。

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