Click here to do the first exercise.
Click here to do the second exercise.
Click here to do the third exercise.
Click here to do the fourth exercise.
Click here to do the fifth exercise.
Click here to do the sixth exercise.
Click here to do the second exercise.
Click here to do the third exercise.
Click here to do the fourth exercise.
Click here to do the fifth exercise.
Click here to do the sixth exercise.
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