Asadutysailor,heshould（）. A: keepagangwaywatch B: oftenlookaroundtheship C: hoistandlowernationalflagontime D: A+B+C
Asadutysailor,heshould（）. A: keepagangwaywatch B: oftenlookaroundtheship C: hoistandlowernationalflagontime D: A+B+C
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