一、1.concentrate2.experience 3.rules 4.learn 5.present
二、1.volunteering 2.noisy 3.changed 4.studying 5.to keep
三、1.It seems 2.How would 3.Whose house 4.should be allowed 5.don't;is
四、1.is strict with 2.is good for 3.concentrates more on 4.at present 5.the other day 6.failed the exam
五、1~5 CDAEB
六、1~5 BCDCC 6~10 DBACB
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