A.
Days passed monotonously. 日子就这么 一天天 单调地过去了。
B.
His eyes looked bloodshot for sleepless nights. 他有 好几个 晚上没有睡觉,眼睛里布满了血丝。
C.
He came to warn him of the ers ahead. 他来警告他将会遇到的 危险 。
D.
Disappearance occurred with apparently increasing frequency. 失踪事件 接二连三地 发生,看起来越来越频繁。