11. They can't afford to buy the car.
- The car..................................................
12. His parents made him study for exams.
- He was..................................................
13. He couldn't get nearner because of the police
- The...
1. He tried to escape but the police stopped him.
- The police prevented him..................................................
2. Couldn't you find a better hotel?
- Is this..................................................
3. "Why hasn't Peter phoned?" She wondered.
- She...
Cho biểu thức:
a) Rút gọn A
b) Tính giá trị của A biết |x-1| = 3
c) Tìm giá trị của x để A > 0 và để A < 0
d) Tìm x để
e) Tính giá trị của x để |A| = 1/2
f) Tìm x € Z để A € N