Unit12SectionA第一题答案
1. block
2. sleep
3. above
4. alwe
5. airport
6.backpack
Unit12SectionA第二题答案
1. leave sth. somewhere
2. keep doing sth,
3. At least
4. give sb. a lift
5. take off
6. wake up
7. wait inline
8. by the time
Unit12SectionA第三题答案
go; sleeping; woke; on; rushed; brushing; face; had;left / gone; street; lift; By
Unit12SectionA第四题答案
Unit12SectionA Grammar Focus第一题答案
1. got; had; left
2. was waiting; heard
3. got; had rung
4. realized; had left
5. to go; to get
Unit12SectionA Grammar Focus第二题答案
1. Before I put cream in my coffee, the coffee had become colcl.
2. By the time I got to school, the teacher had collected the math homework.
3. Before the workday ended, I had completed the work for the boss.
4. By the time I amved at the cinema, the movie had started.
5. By the time I got home from my language course, my mother had finished making the apple pie.
Unit12SectionA Grammar Focus第三题答案
Unit12SectionA Grammar Focus第四题答案