Ifyouswiminariverorlake,besuretoinvestigate

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问题详情:

Ifyouswiminariverorlake,besuretoinvestigate

If you swim in a river or lake,be sure to investigate______is below the water n there are rocks or branches hidden in the water.

      ver  

【回答】

A

知识点:连词

题型:选择题

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