问题描述：
一道关于非谓语的英语题
____against lost luggage,buy brightly coloured luggage or wrap bags with a belt so other passengers will not mistake your luggage with thier own.
A.Guarding B.Guided C.To guard D.Having been guarded
说明理由
____against lost luggage,buy brightly coloured luggage or wrap bags with a belt so other passengers will not mistake your luggage with thier own.
A.Guarding B.Guided C.To guard D.Having been guarded
说明理由
问题解答：
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