The water will be further polluted unless some measures ________.A、will be taken

游客2023-09-24 52

问题 The water will be further polluted unless some measures ________.

选项 A、will be taken
B、are taken
C、were taken
D、had been taken

答案 B

解析考查时态。在时间和条件状语从句中，主句用将来时，从句用一般现在时。

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