一、根据句意及首字母提示补全单词。 1 . — Can you hear me, Mary? — Sorry , there’s too much n ______ here. 2.Don ’ t throw litter about. We should protect our e________. 3.My brother likes collecting old things, e________ old coins. 4. — What ’ s the t________ with you, Michael? — I can ’ t sleep well at night. 5.The music in the square is too l_______. I hardly hear anything .