Exercise One

Exercise Two

Exercise Three

Exercise Four

Exercise Five

Exercise Six

Exercise Seven

Exercise Eight

Exercise Nine

Exercise Ten

Exercise Eleven

Exercise Twelve

Exercise Thirteen

Exercise Foutyrteen

Exercise Fifteen

Exercise Sixteen

Exercise Seventeen

Exercise Eighteen

Exercise Nineteen

Exercise Twenty

Exercise Twenty-one

Exercise Twenty-two

Exercise Twenty-three

Exercise Twenty-four

Exercise Twenty-five

Exercise Twenty-six

Exercise Twenty-seven

Exercise Twenty-eight

Exercise Twenty-nine

Exercise Thirty

Exercise Thirty-one

Exercise Thirty-two

Exercise Thirty-three

Exercise Thirty-four

Exercise Thirty-five

Exercise Thirty-six

Exercise Thirty-seven

Exercise Thirty-eight

Exercise Thirty-nine

Exercise Forty

Exercise Forty-one

Exercise Forty-two

Exercise Forty-three

Exercise Forty-four

Exercise Forty-five

Exercise Forty-six

Exercise Forty-seven

Exercise Forty-eight

Exercise Forty-nine

Exercise Fifty

Exercise Fifty-one

Exercise Fifty-two

Exercise Fifty-three

Exercise Fifty-four

Exercise Fifty-five

Exercise Fifty-six

Exercise Fifty-seven

Exercise Fifty-eight

Exercise Fifty-nine

Exercise Sixty

Exercise Sixty-one

Exercise Sixty-two

Exercise Sixty-three

Exercise Sixty-four

Exercise Sixty-five

Exercise Sixty-six

答案