Unit One 1
Text Related Exercises 1
Exercises for PRETCO 5
Unit Two 17
Text Related Exercises 17
Exercises for PRETCO 21
Unit Three 33
Text Related Exercises 33
Exercises for PRETCO 37
Unit Four 50
Text Related Exercises 50
Exercises for PRETCO 53
Test 1(for Unit One—Four) 66
Unit Five 77
Text Related Exercises 77
Exercises for PRETCO 81
Unit Six 93
Text Related Exercises 93
Exercises for PRETCO 97
Unit Seven 109
Text Related Exercises 109
Exercises for PRETCO 113
Unit Eight 125
Text Related Exercises 125
Exercises for PRETCO 129
Test 2(for Unit Five—Eight) 142