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.