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There is no sentence with id 3072158
漢字とその読み方は両方共書いてあります。それはいりません。平仮名を消してください。
（どこかから貼り付けましたか。）
The author has been active for only one day after registration. Probably a dead user account.
We already have a correct sentence #102217, so... @delete
All kanji are repeated by hiragana in this sentence.
So, correct sentence is 彼は恥ずかしくて顔を赤らめた。