39. Language learners need to know both( A ) how and when to use conjunctions. Their( B ) presence or absence in discourse often contribute to( C ) style, and some conjunctions can sound very pompous when used( D ) inappropriately.

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統計： A(15), B(28), C(101), D(70), E(0) #613888

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Their presence or absence in discourse often contributes to style, and some ...
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pompous

adj.華而不實的； 高傲的，自大的

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