it is_____ to wear so many clothes on such a hot day.(need) 将need词性转换，划横线处。

unnecessary

1. It is unnecessary to go into details.

毋庸赘述。

来自《现代汉英综合大词典》

2. As we are old friends, it is totally unnecessary to stand on ceremony.

都是老朋友，大可不必如此客气。

来自《现代汉英综合大词典》

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