Before writing your article，______，collect your material，and prepare an outline．A、a topic should be selectedB、a topic to be selectedC、your topic should be selectedD、select a topic-易过题库-考试搜题

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Before writing your article，______，collect your material，and prepare an outline．

Aa topic should be selected

Ba topic to be selected

Cyour topic should be selected

Dselect a topic

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