Ⅰ. Exercises 1
Unit 1 1
Unit 2 4
Unit 3 6
Unit 4 9
Unit 5 12
Unit 6 15
Unit 7 18
Unit 8 21
Unit 9 23
Unit 10 26
Unit 11 29
Unit 12 32
Unit 13 34
Unit 14 37
Unit 15 40
Unit 16 43
Unit 17 46
Unit 18 48
Unit 19 51
Unit 20 54
Unit 21 57
Unit 22 60
Unit 23 62
Unit 24 65
Unit 25 68
Unit 26 71
Unit 27 73
Unit 28 76
Unit 29 79
Unit 30 82
Unit 31 85
Unit 32 88
Unit 33 91
Unit 34 93
Unit 35 96
Unit 36 99
Unit 37 101
Unit 38 104
Unit 39 107
Unit 40 109
Unit 41 112
Unit 42 114
Unit 43 117
Unit 44 120
Unit 45 123
Unit 46 125
Unit 47 128
Unit 48 131
Unit 49 134
Unit 50 137
Ⅱ.Tapescripts 140
Unit 1 140
Unit 2 142
Unit 3 144
Unit 4 146
Unit 5 148
Unit 6 151
Unit 7 153
Unit 8 155
Unit 9 157
Unit 10 160
Unit 11 162
Unit 12 164
Unit 13 166
Unit 14 168
Unit 15 171
Unit 16 173
Unit 17 175
Unit 18 177
Unit 19 180
Unit 20 182
Unit 21 184
Unit 22 187
Unit 23 189
Unit 24 192
Unit 25 194
Unit 26 196
Unit 27 199
Unit 28 201
Unit 29 204
Unit 30 206
Unit 31 209
Unit 32 211
Unit 33 214
Unit 34 216
Unit 35 218
Unit 36 221
Unit 37 223
Unit 38 226
Unit 39 228
Unit 40 231
Unit 41 233
Unit 42 236
Unit 43 238
Unit 44 241
Unit 45 243
Unit 46 246
Unit 47 249
Unit 48 251
Unit 49 254
Unit 50 256
Ⅲ. Keys to the Exercises 260