Theteacherspokeveryslowly________t

发布时间：2020-07-26 00:41:38

The teacher spoke very slowly ________ the students could understand everything he was saying.A.in order toB.thatC.so as toD.so that

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D解析根据句意及句子结构，所填选项应为so that来引导目的状语从句。
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