-Is it necessary _ us_ some photos before saving the old man？
-Yes，it is．We can protect ourselves if we do so．（　　）

A．of；taking	B．for；taking
C．of；to take	D．for；to take

【答案】D

【解答】

【点评】

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发布：2024/5/27 14:0:0组卷：283引用：6难度：0.8

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-Is it necessary _____ us_____ some photos before saving the old man？-Yes，it is．We can protect ourselves if we do so．（ ）