一、 根据 汉语或 首字母提示补全单词。 1. Don’t talk so ______( 大声 地 ), please. The baby is asleep now. 2. —Can you hear me, Mary? — Sorry , there’s too much ______( 噪音 ) here. 3. These two dresses are both beautiful. I don’t know which one to c______. 4. Don’t throw litter about. We must protect the e______. 5. She often feels nervous, e ______ when she’s not with her husband.