1 . In many habitats of the monarch butterflies, people are________ the natural environment, such as cutting down trees and using chemicals. (根据句意填空)

2 . Parents and students are________(抱怨)about the limitless amount of homework. （根据汉语提示单词拼写）

3 . Because of the rising energy prices, millions of households in the UK are ___________ (努力，挣扎) to make ends meet. (根据汉语提示单词拼写)

4 . She is always d________ but she never seems to lose any weight. （根据首字母单词拼写）