1 . Her eyes ________ ________ lack of sleep.
她的眼睛因睡眠不足而隐隐作痛。

2 . My muscles were ________ and my ________ ________ as we climbed down the mountain towards home.
我们爬下山回家，往回走的时候，我的腿部肌肉发痛，膝盖发抖。