4．
根据句中所给首字母,汉语提示或括号内所给单词的适当形式,在下列句子的横线上填上语法和意义都正确的词(每空一词)。
（1）I owe you an a ________ for my rudeness last night.
（2）The thief ________(承认) that he had stolen the bike.
（3）It's bad ________(礼貌)to talk with your mouth full.
（4）Fathers of families should have a more sense of ________ (责任)than mothers in China.
（5）Students should be educated to pay more attention to ________ (环境)problems.
（6）People should be positive and learn to a ________ what they have had in life.
（7）If we learn to ________ (回收利用)materials, our natural resources will last longer.
（8）Sally was ________ (收养) by a local family when she was four.
（9）We are very ________ (印象深刻)with the children's excellent work.
（10）With the i________ (目的) of making a large amount of money, many Chinese came to Australia in the 19th century to wash sand for gold.