说明 1
第1册（First Things First）练习答案 1
Lesson 6 1
Lesson 8 1
Lesson 10 1
Lesson 12 1
Lesson 14 1
TABLE OF CONTENTS 1
Lesson 20 2
Lesson 22 2
Lesson 16 2
Lesson 18 2
Lesson 24 3
Lesson 26 3
Lesson 28 3
Lesson 30 3
Lesson 38 4
Lesson 36 4
Lesson 40 4
Lesson 32 4
Lesson 34 4
Lesson 42 5
Lesson 44 5
Lesson 46 5
Lesson 48 5
Lesson 50 6
Lesson 52 6
Lesson 54 6
Lesson 62 7
Lesson 64 7
Lesson 58 7
Lesson 60 7
Lesson 56 7
Lesson 66 8
Lesson 68 8
Lesson 70 8
Lesson 72 8
Can you do this test？ 9
Lesson 74 12
Lesson 76 12
Lesson 82 13
Lesson 84 13
Lesson 80 13
Lesson 78 13
Lesson 86 14
Lesson 88 14
Lesson 90 14
Lesson 92 15
Lesson 94 15
Lesson 96 15
Lesson 98 15
Lesson 106 16
Lesson 104 16
Lesson 102 16
Lesson 100 16
Lesson 108 17
Lesson 110 17
Lesson 112 17
Lesson 114 17
Lesson 116 17
Lesson 118 18
Lesson 120 18
Lesson 122 18
Lesson 124 18
Lesson 130 19
Lesson 126 19
Lesson 128 19
Lesson 132 20
Lesson 134 20
Lesson 136 20
Lesson 138 21
Lesson 140 21
Lesson 142 21
Lesson 144 22
第2册（Practice and Progress）练习答案 23
Pre-Unitrest 1 23
1 26
2 27
3 28
4 29
5 30
6 31
7 32
8 33
9 34
10 34
11 35
13 37
12 37
14 38
15 39
16 40
17 41
18 41
19 42
20 43
21 43
22 44
24 45
23 45
Pre-UnitTest 2 46
25 50
26 51
27 52
28 53
29 53
30 54
31 55
32 56
33 57
34 58
35 59
36 60
37 61
38 61
39 62
40 63
41 64
42 65
44 66
43 66
45 67
46 68
47 70
48 71
Pre-UnitTest 3 72
49 75
50 76
51 77
52 78
53 79
54 80
55 81
56 82
57 83
58 85
59 85
60 87
61 88
62 89
63 90
64 91
65 92
66 94
67 95
68 96
69 98
70 98
71 99
72 101
Pre-Unit Test 4 102
73 105
74 107
75 108
76 109
77 111
78 112
79 114
80 115
81 117
82 118
83 120
84 121
85 123
86 125
87 126
88 128
89 129
90 131
91 133
92 135
93 136
94 138
95 140
96 142