单词填空：从方框中选择恰当的单词填入句子中，注意使用其正确形式。( 每题0.5分，共4分。答案请写在答题纸上) delight          arrange         pollute        lack approve          acquire        recycle       quarrel 小题1:I'm ___________________ that we have settled the matter. 小题2:He spent years ___________________ his skills as a photographer. 小题3:Beth __________________ a meeting with the marketing director. 小题4:Don will only buy the motorcycle if his parents _____________. 小题5:I could hear them ____________________ next door. 小题6:Plastic bottles can be ______________ into clothing. 小题7:The river has been seriously ______________ by a chemical factory. 小题8:Tom ____________ confidence and needs a lot of encouragement.