Contents 4
Program D“Later...” 4
Segment 1 5
Segment 2 6
Segment 3 8
Segment 4 10
Segment 5 11
Review 14
Program E“&All the Time” 17
Segment 1 18
Segment 2 19
Segment 3 21
Segment 4 23
Review 26
Program F“Remember？” 30
Segment 1 31
Segment 2 34
Segment 3 36
Segment 4 37
Review 41
练习答案 45