Bài 8: Choose the letter A, B, C or D to indicate the underlined words that need correction.
1. (A) The office phone (B) needn't be used (C) for (D) private calls.
2. You (A) needn't forget (B) to buy some (C) vegetables when (D) going home this evening.
3. We have (A) enough food (B) at home, so we (C) mustn't go (D) shopping today.
4. (A) Some people think that there (B) is still gender (C) discriminate (D) in our country.
5. These (A) pills must not (B) take if you (C) are (D) under 12 years old.
Bài 9: Rewrite the sentences in passive voice.
1. You may forget the rules quickly.
2. You should study the lessons repeatedly.
3. My brother must win the competition.
4. They should cancel the match.
5. The teacher can't persuade her.
6. They need to repair my car.
7. Who should pay the damage?
Bài 10: Rewrite the sentences so that they mean the same using the word given.
1. It's not neccessary for you to do the test.
 You_____________________________________
2. They will catch all the prisoners again tonight.
 All the prisoners_____________________________________
3. We haven't cleaned the street this week.
  The street_____________________________________
4. She could repair the broken vase.
The broken vase_______________
5. It is essential that no one be told about our plan.
 You______________________________________ -
6. It was wrong of you not to call the doctor immediately.
 You_______________________________________