why should be_?Because it is _for you to concentrate wella relaxing;helping b relaxing;helpfulc relaxed;helpingd relaxed ;helpful

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whyshouldbe_?Becauseitis_foryoutoconcentratewellarelaxing;helpingbrelaxing;helpfulcrelaxed;helpingdr

why should be_?Because it is _for you to concentrate wella relaxing;helping b relaxing;helpfulc relaxed;helpingd relaxed ;helpful
why should be_?Because it is _for you to concentrate well
a relaxing;helping
b relaxing;helpful
c relaxed;helping
d relaxed ;helpful

why should be_?Because it is _for you to concentrate wella relaxing;helping b relaxing;helpfulc relaxed;helpingd relaxed ;helpful
D
relaxing 是令人放松的 sth is relaxing
relaxed 是放松的,悠闲的,sb is relaxed
it is helpful for sb 对某人有用有帮助,helping就是现在分词.
为什么应该放松心情,因为他对你集中精力有帮助.
根据意思应为D选项.
晕,要我选,肯定是D了.参照一楼吧.

观月relaxing和relaxed的区别，附上链接供你参考。希望对你有帮助
be helpful for是固定搭配，指的是对什么有帮助，第二个空应该要用helpfulrelaxing令人放松的 relaxed自己放松的 我觉得两个都好像可以啊动词ed的主语主要是人，ing侧重点是物。那这里休息的是人吧我再想想要怎么给你说好了，理一下思路...

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观月relaxing和relaxed的区别，附上链接供你参考。希望对你有帮助
be helpful for是固定搭配，指的是对什么有帮助，第二个空应该要用helpful

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选择B。
relax是动词，在这里用动名词，因为是主动的关系。
后面是做表与，得形容词。

B

放松是一种状态，用动名词，而第二空，it is + 形容词+ for sb. to do...是一种句型

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