1 . Last night, she ______ (抱怨) to the official about the poor service on Britain’s railways. (根据汉语提示单词拼写)

2 . 不采取行动只抱怨是没有意义的。（there is no point in）（汉译英）

3 . We will never achieve success if we are always________(抱怨) without taking action. (根据汉语提示单词拼写)

4 . He ______（抱怨）that he had been waiting for us until the flowers faded.