这些厚重的窗帘减弱了外面的噪音。

The heavy curtains ___deadened the noise from outside.

长时间的麻木已经让他的手指失去了知觉。

The prolonged numbness has ___deadened the feeling in his fingers.

连续加班让他感觉精力被耗尽了。

The constant overtime work ___deadened his energy.